Thursday, May 2, 2024

Stages of Hair Growth Plus How to Maintain Hair Health in Every Stage

how long does hair grow in a year

Your hormones, genetics, and overall health can all impact how fast your hair grows. So, worry not if your bob hasn't turned into a ponytail overnight—it's completely normal. And, hey, if you want to extend your lengths immediately, there are definitely a ton of temporary quick fixes (thank you, extensions). One study of more than 300 men with male pattern baldness found that almost 70% of men who committed to scalp massage reported that their hair loss stopped or they noticed hair growth. The scalp massage sessions in the study were twice a day for 20 minutes for 10 months  (English, 2019). Avoiding harsh hair care products like chemical relaxers, perms, and dyes can help prevent hair follicle damage and hair breakage.

Best for Damaged Hair: Kérastase Genesis Fortifiant Hair Serum

Good sources include certain vegetables, nuts, yogurt, and foods like lean meat and fish. People with oval shaped follicles have very curly hair, while those with round follicles have straight hair. You probably know people whose hair seems to grow overnight, going from short locks to a luscious, flowing mane in a matter of months.

Radiation therapy to the head

She is passionate about empowering people to live a healthy lifestyle and promoting the benefits of a plant-based diet. This may depend on the severity of any underlying hair loss conditions, as well as the treatment method. Any unusual hair loss should be addressed with a doctor, no matter the time of year. Generally, it’s best to get protein from your diet instead of relying on supplements.

What Might Be Preventing Someone From Growing Longer, Stronger Hair?

How I Grew My Hair 4 Inches in 6 Months - Who What Wear UK

How I Grew My Hair 4 Inches in 6 Months.

Posted: Mon, 30 May 2022 07:00:00 GMT [source]

The set includes almond, avocado, castor, coconut, and grapeseed oils. If you’re new to carrier oils, this is a good way to try multiple types without investing in larger bottles of each. Generally, it’s best to get your vitamins and nutrients from your diet. Still, you may also look into taking certain supplements — particularly if you have a deficiency.

In addition to that, we’ll provide research-based information about hair growth stages and factors that influence your average hair growth rate. The easiest way to change how long hair grows in a year is by taking hair vitamins like Hairlust Hair Formula supplements. These supplements are designed to fuel your follicles with all the vitamins and minerals required for healthy hair growth. If you’re wondering how fast hair grows you’ve come to the right place. I'll go over different factors that affect your hair growth rate, as well as give my best tips for how to speed it up. A regular scalp massage may effectively stimulate hair growth, resulting in thicker and healthier hair.

Bond-Building Treatments

Does Your Hair Really Change Every 7 Years? - Allure

Does Your Hair Really Change Every 7 Years?.

Posted: Wed, 07 Oct 2015 07:00:00 GMT [source]

Healthy hair usually grows about 0.35 millimeters (mm) every day. That's roughly one-half inch every month and about 6 inches every year. Most adults have between 80,000 and 120,000 hairs on their head that grow like this, and it is normal to shed between 100 and 150 scalp hairs every day. To dispel a myth right off the bat, no hair product, supplement, or other intervention will make your hair grow faster than that 1/2-inch per month. "There hasn't been anything proven to make hair grow faster," says Friese. Though hair grows so slowly that it's barely perceptible, it typically grows at least half an inch each month, according to Gretchen Friese, BosleyMD Certified Trichologist.

how long does hair grow in a year how long does hair grow in a year

Healthy, young hair usually grows about half an inch each month, and is lost at a rate of about 100 hairs a day. For instance, if your hair tends to be dry, then “look for serums that contain oils to help hydrate the dry hair shaft,” says Dr. Shaver. With so many hair growth products on the market, it is difficult to discern which pick is best for your hair.

Can Hair Grow 2 Inches in a Month?

As the blood vessels feed the roots with oxygen and nutrients, they multiply and grow into hair. Keep reading for more information on how hair grows and the various factors that affect the speed of its growth. However, lots of different factors affect the speed of hair growth. Using a conditioner can help seal, hydrate, and protect your hair. In addition, conditioners make your hair shinier and easier to comb. This can help cut down on hair breakage, especially if you have long hair.

Happy Skin Range

Healthier scalp and hair follicles grow hair strands that are less likely to break off (Dias, 2015). Each person’s hair growth is as complex and individual as they are. The primary factors are genetics and hormones,” Vasiloudes says. “In addition, nutrition, environment, and age can also impact hair growth," he notes, along with stress, medications, hormones, diseases, and illness. Many factors can affect hair growth and how fast your hair grows. Your hair growth may speed up at times and slow down at other times.

Some other nutrients you may want to look for are iron and biotin. If you believe that you’re losing your hair at a faster rate than you’re used to, talk with a doctor. An underlying condition that’s disrupting the stages of hair growth may be to blame, and treating it promptly may help slow hair loss and preserve the healthy hair you have left.

It’s not currently possible to know when it might fall out or grow back. At-home tools are available for purchase, though using an in-office device or a light therapy session performed by a healthcare provider may lead to better results. The right conditioner can also make a difference, but finding the right products may take some trial and error. Pay attention to how your hair responds to various shampoos and conditioners. If your scalp is slightly oily but your ends are not, try a dry shampoo in between washes. This highly rated shampoo from Alpecin combines caffeine with niacin and zinc to promote fuller-looking hair and a thicker texture.

This can strengthen the hair root, clear toxins from the sebaceous glands, and keep the tissue healthy and strong. First of all, you need to understand that hair is a very simple material, primarily made up of water, sulfur, and protein. The sulfur content in your hair is why it smells so bad when you singe one of your locks with a match by accident! Also, avoiding sugar and high-starch foods, which slow down hair growth, is another viable option.

However, PRP therapy supports healthier hair growth and improves the condition of existing hair follicles, which may help hair grow longer over time. Friese recommends applying a diluted rosemary oil or castor oil every other day in order to give your scalp TLC. Rosemary oil may help encourage circulation on the scalp and in turn, promote healthy hair growth, notes Friese.

Fruit enzymes, BHAs and rice powder exfoliate, while Jojoba, Coconut and Melon oils hydrate your locks. It’s an ideal way to stimulate your scalp and improve blood circulation, which we recommend for hair growth. You can use this once a week after shampooing instead of a conditioner.

That said, if you don’t want to skip the styling, ask your stylist for products that can help protect your hair shafts from heat (Malkani, 2020). To break this cycle, experts suggest finding ways to reduce stress, like engaging in meditation, exercising regularly, prioritizing sleep, or cozying up with a pet or loved one. These stress-reduction techniques will not only help your body and mind, they may also help your hair as well (Hadshiew, 2004). You should always consult your healthcare provider before taking any supplements. Iron and vitamin D supplements are commonly prescribed to offset deficiencies.

How fast does hair grow? Facts and healthy hair growth tips

how long does hair grow in a year

Research has shown that men’s hair tends to grow faster than women’s hair. Embarking on the journey to grow short hair into longer locks requires patience and a strategic approach. This section will explore effective tips and practices to get you through the grow-out phase and get the longer hair you desire. Your best bet is to eat a balanced diet and drink plenty of water. Your new hair may grow back a different texture or color than before. In rare instances, hair loss from many years of strong chemotherapy can be permanent.

When to see a doctor about hair growth

Bond-building treatments, such as Olaplex or similar products, are designed to repair and strengthen damaged hair. While they don't directly stimulate hair follicles or increase the rate of hair growth, they may indirectly support healthier hair growth by improving the overall condition of the hair. There is evidence to show that peppermint oil may help promote hair growth by increasing blood circulation to the scalp, which delivers vital nutrients and oxygen to the hair follicles. In turn, this activates the follicles and encourages the early onset of the anagen phase of the hair cycle. When applied to the scalp, minoxidil is believed to widen blood vessels, promoting increased blood flow to hair follicles. This improved circulation is thought to stimulate hair growth and is often used to address conditions such as androgenetic alopecia, commonly known as pattern baldness.

What makes hair grow back faster?

However, this commonly cited rate of hair growth applies mostly to white people. The four phases of hair growth include anagen, catagen, telogen, and exogen. The exogen phase is essentially an extension or a part of the telogen stage of hair growth. During the exogen phase, hair is shed from the scalp, often helped along by washing and brushing. Losing 50 to 100 hairs per day during the exogen phase is normal.

The 11 Best Hair Growth Serums for Long, Strong Hair

Understanding how fast your hair grows can offer insights into issues related to hair thickness, health, and potential strategies for speeding up its growth. In some cases, supplements containing vitamins and minerals specifically targeted for hair growth, such as collagen and amino acids, may be beneficial. However, it's essential to consult with your healthcare provider before starting any new supplement regimen. A theory is that herbs might encourage blood flow to the scalp, which reduces inflammation and supports a healthy environment for hair growth.

Let's Gain An Inch A Month Of Hair Growth 'Til December, Shall We? - xoNecole

Let's Gain An Inch A Month Of Hair Growth 'Til December, Shall We?.

Posted: Tue, 19 Jan 2021 08:00:00 GMT [source]

The body has different types of hair, including vellus hair and androgenic hair, each with its own type of cellular construction. This hair will usually grow to several feet before terminating, but many humans develop much longer hair. For example, minoxidil topical treatments for hair loss may take 3 to 6 months to work, while the correction of any nutritional deficiencies can vary in duration.

Stages of hair growth after chemo

Many factors — including genetics, sex, and age — can influence the speed of hair growth. When you start the medication, it’s normal to see more hair loss in the first few months. New hair growth is usually noticeable by the third or fourth month of treatment, and even more noticeable by month six. Often people take finasteride for a year or more (Zito, 2022; Shin, 2019).

That’s the deal with hair on your head—keep in mind that hair growth rates vary based on anatomic location. “Some hair follicles are dormant, meaning the hair is not dead but rather ‘asleep’ for a period ranging between two to 12 months. Others are terminal, as in actively growing, and some do not grow at all or only grow after stimulation under various conditions,” says Vasiloudes. According to The Trichological Society, the average hair growth rate is between 0.5 and 1.7 centimeters (0.2 to 0.7 inches) per month. This varies based on multiple factors, which will be discussed in detail below. While PRP therapy may stimulate dormant hair follicles and potentially enhance the overall quality of hair, it doesn't directly affect the rate at which hair grows.

how long does hair grow in a year

If you notice hair thinning rather than hair growth, Ro can connect you with healthcare providers who can recommend over-the-counter or prescription medications to help treat your hair loss. Wearing a hat or scarf when you’re out for long periods in the sun can help prevent ultraviolet (UV) radiation from damaging your scalp, hair shafts, and hair follicles. Protecting your scalp can keep your hair in peak shape for hair growth (Gherardini, 2019). Generally, people from ages 15 to 30 see the fastest hair growth rate compared to other age groups. Hair tends to grow slower past age 30 and even slower still for older individuals.

Losing Your Hair After COVID-19? There Is Good News - University of Utah Health Care

Losing Your Hair After COVID-19? There Is Good News.

Posted: Tue, 15 Mar 2022 07:00:00 GMT [source]

The Anagen Phase – Growing Phase

Hair grows for about six years before it falls out, and it’s normal to lose about 100 hairs each day. That title may actually be a bit inappropriate, because the methods of speeding up hair growth are far from secrets! People have been managing their lifestyle, diet, and behaviors for thousands of years to alter the growth patterns and rates of their hair. Scalp hair grows at an average rate of 0.4 inch (1 cm) per month.

Hair grows at about half an inch per month, and the hair on your head usually grows for about six years before falling out. Your hair is in a constant state of growth and renewal, and it’s normal to shed hair each day, even as new hair grows. “For sensitive or acne-prone skin, either frequent pillowcase changes or wearing a hair bonnet after serum application may be helpful,” she says. Meanwhile, “the goal of a serum is to target the hair follicle directly by delivering compounds that may allow for improved or optimal hair growth,” says Dr. Mirmirani. These ingredients are those that aren’t typically found in the diet, such as minoxidil and plant-based compounds.

Hair is also an excellent insulator, and it can extend our sense of touch so that we can "feel" something even before it directly touches our skin. Scientists also believe it serves a social communication purpose. Different hair types may benefit from different types of conditioners, so ask a stylist if you’re unsure of what type of conditioner your hair needs (Dias, 2015).

Another factor to consider is to avoid heavy lawn use of foot traffic directly after you’ve put down grass seeds. “You should limit foot traffic on the area for 2-3 weeks to minimise damage to the rooting in seeds,” adds Chrissie Handley, a lawn care specialist at Online Turf. Once you’ve sown your grass seed, there are a few things you need to do to ensure healthy growth and lawn care maintenance. Hot tools like straighteners and curling wands dry out your hair, which can lead to breakage. Of course, the best thing for your hair is styling your hair with heatless hairstyles. Some researchers think that how fast hair grows is dependent on the season.

According to Yates, hair typically grows .5 to 1.7 centimeters per month, but you may see about six inches per year. Again, remember that many factors contribute to hair growth, and everyone is different—so these numbers are just general. The telogen phase, also known as the resting phase, lasts about three months. During this phase, hairs don't grow (but they don't usually fall out, either), and new hairs start to form in follicles that have just released hairs during the catagen phase.

As I mentioned before, a healthy diet is essential for healthy hair growth. If you’re not getting all the vitamins and minerals you need from your diet, you may experience slowed hair growth or hair loss. Nutrient deficiencies can also cause brittle hair that’s more prone to breakage. High levels of stress can disrupt the hair-growth cycle and lead to hair loss. Cortisol is a hormone produced by the adrenal glands in response to stress. Hair growth is largely impacted by genetics, but other factors can affect how long and strong your strands are.

If you don’t color your hair, you could discover how much your hair grows in a month by taking pictures of your hair with monthly intervals. It is crucial to keep your hair in the same position and take the photos from the same angle. Another way of checking how much your hair has grown in a month is simply measuring it with a measuring tape if you have an even haircut. The first method for measuring how much does your hair grow in a month is very simple. However, this way to learn how much hair grows in a month works only if you color your hair. Without these adjustments, you may have unevenness or awkward lengths that compromise your style.

Wednesday, May 1, 2024

5 Frizzy Hair Home Remedies, Plus Products and Prevention Tips

what causes frizzy hair

She shares that steam encourages the scales of the cuticle layer to open, which allows for moisture to work its way in. There isn’t much evidence that links eggs to a reduction in hair frizz, but some people believe an egg mask can make hair healthier, shinier, and frizz-free. Send your Q to for a chance to have it featured in a future installment of Hair Health Hotline. Brittle hair, lacking elasticity, becomes prone to breakage, often manifesting as frizz. Additionally, hormonal shifts, such as those experienced during pregnancy or menopause, can change hair texture. This altered texture further predisposes hair to frizziness.

Curly Hair

Shampoos For Frizzy Hair 2024 - Forbes Vetted - Forbes

Shampoos For Frizzy Hair 2024 - Forbes Vetted.

Posted: Tue, 23 Apr 2024 17:47:00 GMT [source]

The first thing you need to do, however, is to identify your hair type, Boyer said. There are plenty of brands making sulfate-free shampoos and conditioners, such as Shea Moisture, Moroccanoil, DevaCurl and OGX, many of which are available at drugstores. "For more curl definition, I recommend individually twisting or curling your hair while applying [leave-in conditioner] section by section," says Solivan. Add this rinse to damp hair, making sure to coat all of the strands from root to end.

Oily Hair

Opt for an extra-soft boar-bristle brush to help gently lay the cuticle down if you have straight, fine hair, says Aguirre. Curly, coarser hair types may find that using a hairbrush may add to the frizz, but if you're prone to tangles, a wide-tooth detangling comb is your best option. If your hair gets frizzy regardless of climate, anti-frizz products, or styling method, it may be caused by heat damage.

Treatments & Masks

Certain vitamins, such as biotin, are integral to hair growth and strength. A deficiency in these vital nutrients can hinder growth and render the hair strands weak. This weakened state, consequent to vitamin inadequacy, makes the hair brittle and more susceptible to breakage, leading to uneven lengths and textures. Furthermore, vitamins are crucial for maintaining a hair’s smooth texture. Their deficiency can disrupt the hair’s cuticle health, resulting in rougher hair.

Leave-in conditioners are designed to stay in your hair instead of getting rinsed out. They’re typically more lightweight than the type of conditioner you use in the shower. Manufacturers of leave-in conditioners say that they’re more moisturizing than traditional conditioners because they’re left in your hair longer.

These new growths typically have a shorter length than the rest of the hair, resulting in a disparity in hair length. In essence, frizzy hair is often the byproduct of hormonal changes, including moisture imbalance, diminished elasticity, and texture alterations, all stemming from hormonal fluctuations. Another impact of aging is on the hair cuticles, which become rough and irregular. These roughened cuticles don’t lie flat, making the hair susceptible to frizz. Wet hair, being highly elastic, is vulnerable to breakage. Therefore, brushing it while damp can result in damage and ensuing frizz.

Damaged Hair

Specifically, the cleansing ingredients in shampoos and hot water are to blame. Improper hair care habits like harsh washing, rough drying, and over-brushing further damage cuticles. Frequently touching hair or using products with sulfates and alcohol strip protective oils. Fluctuating hormones and certain medications alter oil production, influencing frizz. If you apply your styling products after you towel-dry your hair you’re not alone – but you’re better off putting product into your hair when it’s still dripping wet. That helps to add a protective layer against frizz and means you don’t have to brush your wet hair a second time to distribute the product (brushing hair too often also contributes to excess frizz).

Low-porosity hair cuticles are so tightly closed that it’s very difficult for water to get through. The challenge with this hair type is that products often sit on the strand instead of absorbing it. "Even water rolls off and will evaporate off of the strand before it’s able to be absorbed" she explains. Taming frizz on your natural texture is one thing, but keeping straightened hair sleek is a whole other can of worms. Luckily, Glamour commerce editor Shanna Shipin has figured out a trick that makes straightening her curls smooth sailing. “While it’s super tempting to grab a brush and detangle myhair before straightening, I never do it,” she says.

Ultralight Smooth Weightless Protection Shampoo

what causes frizzy hair

Normal hair dryers toss hair around, causing friction and frizz, a diffuser helps you dry your hair without all that movement so your curls can bounce, not fray. It's true though—of all the hair care woes one can go through (from split ends to greasy roots to thinning), frizzy hair often tops the list of hair concerns many beauty brands market to cure. That being said, rather than sifting through your (albeit impressive) stockpile of anti-frizz serums, oils, and treatments, embracing your frizz can actually be a beautiful thing.

Remember, curls are a pattern of the cuticle that need to lay on top of each other in order to appear shiny, says Aguirre. "Since the cuticle is going around and around (think of an individual curl), if you disrupt it, it will expand and lead to frizz." To minimize friction, try to prevent your hair from rubbing harsh surfaces like rough fabric or dirty hot tools. If you take a look at a single strand of hair, it might not look frizzy at all. Yet with all of your hair combined, a straggly look may appear—why is that?

If you tend to have very slick, straight hair, then a slight frizz for you might be the smoothest day of all for someone else, and vice versa. We all know what frizz can look like on our own hair, and that's what matters most in terms of taming (or styling) your strands. The best way to do this is to ensure you’re eating a healthy, balanced diet. Hair serum coats the hair, providing shine and protection against humidity. Hair serum doesn’t heal damage, but it can help protect hair from the elements, helping it retain moisture. When applied to hair, coconut oil is easily absorbed and can help add moisture to the hair and reduce protein loss.

As well as making it oily, touching your hair frequently can also cause excess frizz – especially if your skin has any sort of moisture on it. If you skip blow-drying in favor of letting hair air-dry, it’s even more important to avoid touching or playing with it while it’s drying, as that can also cause unwanted frizz. “Friction created from brushes with nylon bristles and roughly towel-drying your hair can also ruffle the cuticle, causing annoying frizz,” says Waldman.

Mayo Clinic Minute: Expert advice for women with thinning hair

what causes female hair loss

About half of all women will have hair loss at some point in life. Most start to notice it in their 50s or 60s, but it can happen at any age and for a variety of reasons. Hair usually starts to regrow within months of finishing chemotherapy or radiation treatments to the head or neck.

Hair Loss Prevention: 22 Things You Can Do to Stop Hair Loss - Healthline

Hair Loss Prevention: 22 Things You Can Do to Stop Hair Loss.

Posted: Thu, 25 Apr 2024 16:18:45 GMT [source]

Former Executive Editor, Harvard Women's Health Watch

Under normal conditions, women have a minute fraction of the level of testosterone that men have, but even a lower level can cause DHT- triggered hair loss in women. Male pattern baldness typically involves progressive hair loss above the temples and thinning at the crown of the head, creating an “M” shape. Another cause of hair loss is called telogen effluvium (TE), which is typically temporary. According to the American Academy of Dermatology (AAD), TE isn’t actually defined as “hair loss,” but rather as excessive hair shedding. This type of hair loss occurs slowly, over the course of several months or years. Most baldness is caused by genetics (male-pattern baldness and female-pattern baldness).

what causes female hair loss

Hair Loss in Women

People may experience hair loss while using birth control pills. Others might experience hair loss several weeks or months after they stop taking birth control pills. The condition is more likely to occur as a person ages, but it can start at any point after puberty. Many females who experience androgenetic alopecia develop it after menopause.

Can hair loss in women be prevented?

Everything from starting medications to stopping others and starting therapies for contributing diseases can play a role. Most healthy people lose up to 100 strands of hair per day. As part of your hair’s growth cycle, new strands grow and take the place of the ones you shed. Even if your hair loss is hereditary, there are treatments that exist that can help slow or reverse hair loss. If possible, talk with your doctor to address your concerns and rule out any serious underlying medical concerns that may be causing your hair loss.

Other Conditions

Most people lose anywhere from 50 to 100 strands of hair each day, according to the American Academy of Dermatology. On days you wash your hair, you might lose up to 250 strands. Victoria Barbosa, MD, is a board-certified dermatologist.

Mayo Clinic Press

Thinning hair in women: Why it happens and what helps - Harvard Health

Thinning hair in women: Why it happens and what helps.

Posted: Wed, 03 Apr 2024 07:00:00 GMT [source]

Your scalp hair can last up to six years or even longer. Poisons that can cause hair loss include arsenic, thallium, mercury, and lithium. If you ingest a large amount of warfarin, which is found in rat poisons, it can also cause hair loss. Taking large amounts of vitamin A or selenium is also toxic and can cause hair loss. Many people who have plaque psoriasis develop psoriasis on their scalp at some point.

Long term treatment is usually necessary to sustain the benefits. These tests can be done in your dermatologist’s office. Some people may choose to use a scalp concealer, hair topper, or other product to cover hair loss. You're likely to first bring your concerns to the attention of your family doctor.

Hair loss can happen a couple of weeks to 6 months after any stressful experience. Because hair is constantly falling out and growing, hair loss often goes unnoticed. You're more likely to notice it when a lot of hair enters the resting phase at the same time or if hair roots become damaged during the growth process. While hair loss isn’t itself dangerous, losing your hair is an emotional experience.

Androgenetic Alopecia Treatments

Early treatment of a receding hairline (frontal fibrosing alopecia) might help avoid significant permanent baldness. The cause of this condition is unknown, but it primarily affects older women. The FDA has approved a few laser treatment devices to treat hair loss at home. But we need more studies into their safety and effectiveness for long-term use.

Before taking this medication, be sure to discuss possible side effects with your dermatologist. Within the first few months of treatment, you may notice that you are losing less or minimal amounts of hair. Once your dermatologist finds the cause(s), your dermatologist will tell you whether treatment is recommended.

It’s the most significant cause of hair loss in women and people AFAB. Approximately 30 million women and people AFAB in the United States have female pattern baldness. The most common cause of hair loss in women is female-patterned baldness (androgenetic alopecia). OTC medications may help reduce hair loss and promote growth.

You can search by location, condition, and procedure to find the dermatologist that’s right for you.

Scientists now believe that it's not the amount of circulating testosterone that's the problem but the level of DHT binding to receptors in scalp follicles. DHT shrinks hair follicles, making it impossible for healthy hair to survive. It’s best to see a healthcare professional for any unexplained hair loss so they can determine the underlying cause and best course of treatment. Tinea capitis, also called ringworm of the scalp, is a fungal infection that can affect the scalp and hair shaft.

Hormonal imbalances before, during and after menopause can lead to more permanent hair loss, Dr. Simpson says. Many types of wigs, including ones that can be custom-made for you, are available. If you’re looking for a concealer, such as a spray or powder that can hide hair loss, you’ll find many products available online. With endless choices, it can be helpful to have a dermatologist guide you in selecting one. If finasteride works for you, you will need to keep taking it to continue getting results.

You'll soon start receiving the latest Mayo Clinic health information you requested in your inbox. If you're pregnant, planning to become pregnant, or breastfeeding, ask your doctor before taking minoxidil. It may be harmful to your unborn baby and can pass through breast milk to a nursing infant.

Stages of Hair Growth Plus How to Maintain Hair Health in Every Stage

Table Of Content Best for Damaged Hair: Kérastase Genesis Fortifiant Hair Serum Radiation therapy to the head What Might Be Preventing Someo...