Fremont, CA
A 36-year-old male asked:
Please share an interesting fact about hair care.
78 doctor answers • 87 doctors weighed in

A Verified Doctoranswered
18 years experience
Blondes: Blondes have less hair follicles on their scalp than brunettes do = thinner hair.
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5.3k viewsReviewed >2 years ago

Dr. Morris Westfriedanswered
Dermatology 48 years experience
Redheads: Redheads have less hairs than other hair colors.
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5.3k viewsReviewed >2 years ago

Dr. Cheryl Levinanswered
Dermatology 18 years experience
Nails: Nails and hair are made of the same basic protein, called keratin.
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5.3k viewsAnswered >2 years ago

Dr. Cheryl Levinanswered
Dermatology 18 years experience
On: On average, a single hair's life span is about 5 years.
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5.3k viewsReviewed >2 years ago

Dr. Cheryl Levinanswered
Dermatology 18 years experience
The: The average scalp has about 100, 000 hairs.
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5.3k viewsAnswered >2 years ago

Dr. Cheryl Levinanswered
Dermatology 18 years experience
Hair: Hair loss is sometimes related to thyroid imbalance and iron stores.
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5.3k viewsAnswered >2 years ago

Dr. Cheryl Levinanswered
Dermatology 18 years experience
Some: Some medications may cause hair loss.
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5.3k viewsAnswered >2 years ago

Dr. Cheryl Levinanswered
Dermatology 18 years experience
Washing: Washing your hair more often does not, generally, cause more hair loss.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Dermatologists: Dermatologists are the experts in the medical, surgical and cosmetic treatment of skin, hair, nails.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Dermatologists: Dermatologists are medical doctors who diagnose and treat skin, hair and nail conditions.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Myth:: It's a myth that: if you cut your hair, it will grow faster.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Human: Human hair grows in cycles with a growth phase followed by a resting phase.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
On: On average blondes have 120, 000 scalp hairs; brunettes have 100, 000; redheads have 80, 000.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Tight: Tight plaiting of the hair, as in cornrows or pigtails, or tight ponytails can cause hair loss.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Many: Many women develop diffuse thinning of the hair as they grow older. (androgenetic alopecia).
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Excess: Excess facial hair in women may indicate a hormonal imbalance.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
An: An enlarged pore is the opening of a follicle that has a tiny hair and a large active oil gland.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
There: There is no scientific evidence that plucking makes hairs coarser, or darker, or increases growth.
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5.3k viewsReviewed >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Ingrown: Ingrown hairs: closely cut coarse curly beard hair may curve back and renter the skin.
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5.3k viewsAnswered >2 years ago

Dr. Heidi Fowleranswered
Psychiatry 27 years experience
If: If you want healthy skin & hair ensure you have an adequate vitamin a intake.
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5.3k viewsAnswered >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Boils: Boils are infections of the skin caused by bacteria usually starting in hair follicles.
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5.2k viewsAnswered >2 years ago

Dr. Joshua Foxanswered
Dermatology 41 years experience
Blow: Blow dry your hair on cool setting so as to not dry out the hair so much!
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5.2k viewsReviewed >2 years ago

Dr. Sophie Duriezanswered
Psychiatry 34 years experience
To: To keep hair healthy, choose good brand shampoo and avoid using it daily! once or twice a week is ok.
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5.2k viewsReviewed >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Electrolysis: Electrolysis uses an electric current to kill hair at its source, the hair papillae.
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5.2k viewsReviewed >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Colored: Colored or permed hair needs extra moisture, esp. In summer. Comb a dime sized dab of conditioner.
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5.2k viewsReviewed >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Coloring: Coloring weakens the hair by breaking down the disulfide bonds in the hair shaft. Don't do it often.
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5.2k viewsReviewed >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Colored: Colored hair: avoid products with lots of mineral oil or silicone which can strip color.
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5.2k viewsReviewed >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
Brittle,: Brittle, heat damaged hair: use shampoos with added moisturizers like glycerine, butylene glycol, ..
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5.2k viewsReviewed >2 years ago

Dr. Arthur Balinanswered
Dermatology 49 years experience
If: If your neck is thick bring some hair forward from the sides of the neck or cut your hair in longish.
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5.2k viewsReviewed >2 years ago

Dr. Geoffrey Rutledgeanswered
Internal Medicine 39 years experience
Red: Red heads have less hairs than blonds or brunettes.
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5.2k viewsReviewed >2 years ago

Dr. Geoffrey Rutledgeanswered
Internal Medicine 39 years experience
Lasers: Lasers do not work on white or grey hair.
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5.2k viewsAnswered >2 years ago

Dr. Coyle Connollyanswered
Dermatology 31 years experience
Thick: Thick scalp scale (dandruff) may respond to olive oil applied to the skin several times a week.
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5.1k viewsReviewed >2 years ago

Dr. Tracy Lovellanswered
Internal Medicine - rheumatology 23 years experience
Sudden: Sudden onset of kinky curly or brittle hair can be associated with hypothyroidism.
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5.1k viewsReviewed >2 years ago

Dr. Wenjay Sunganswered
Podiatry 16 years experience
The: The us spends about $20 billion annually on hair care products.
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5.1k viewsAnswered >2 years ago

Dr. Coyle Connollyanswered
Dermatology 31 years experience
Wearing: Myth: wearing hats and helmets contributes to male-patterned baldness.
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5.1k viewsReviewed >2 years ago

Dr. Monib Zirvianswered
Dermatology 23 years experience
Biotin,: Biotin, zinc, and iron are all important vitamins and minerals for optimal hair growth.
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5k viewsReviewed >2 years ago

Dr. Monib Zirvianswered
Dermatology 23 years experience
Between: Between 50 and 100 hairs are shed each day on average. Shedding this level of hair is not abnormal.
Created for people with ongoing healthcare needs but benefits everyone.
5k viewsReviewed >2 years ago

Dr. Wei-shin Laianswered
Family Medicine 21 years experience
You: You don't have to wash your hair daily. That dries it out!
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5k viewsAnswered >2 years ago

Dr. Wei-shin Laianswered
Family Medicine 21 years experience
A: A scalp massage and hair brushing is very relaxing and helps humans bond.
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5k viewsAnswered >2 years ago

Dr. David Sireanswered
Dermatology 56 years experience
Avoid: Avoid ultraviolet light as much as possible as it damages hair.
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5k viewsAnswered >2 years ago

Dr. Tod Halleranswered
Ophthalmology 18 years experience
Most: Most people assume they have dandruff when they have dry scalp. Dandruff shampoo will worsen it.
Created for people with ongoing healthcare needs but benefits everyone.
5k viewsAnswered >2 years ago

Dr. Tod Halleranswered
Ophthalmology 18 years experience
Most: Most people assume they have dandruff when they have dry scalp. Dandruff shampoo will worsen it.
Created for people with ongoing healthcare needs but benefits everyone.
5k viewsAnswered >2 years ago

Dr. Pavel Conovalciucanswered
Family Medicine 25 years experience
No: No matter what techniques you recur to, you cannot add or make any of your hair longer.
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5k viewsReviewed >2 years ago

Dr. J. Lawrence Dohananswered
Dermatology 59 years experience
Massing: It's a myth that massaging the scalp can stimulate hair growth.
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5k viewsAnswered >2 years ago

Dr. Gregory LaMorteanswered
Periodontics 44 years experience
Once: Once you have found an anti-dandruff shampoo that works for you, keep on using it.
Created for people with ongoing healthcare needs but benefits everyone.
5k viewsAnswered >2 years ago

Dr. Gregory LaMorteanswered
Periodontics 44 years experience
Use: Use a mild shampoo. Stronger shampoos can irritate and dry out your hair.
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5k viewsReviewed >2 years ago

Dr. Ihab Ibrahimanswered
Pain Management 31 years experience
Giving: Giving yourself a scalp massage is easy & can do to relieve tension, improve hair health!
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5k viewsAnswered >2 years ago

Dr. Antoanella Calameanswered
Pathology 21 years experience
Chlorine: Chlorine and salt water can dry, discolor, and damage your hair. Make sure to rinse after you exit.
Created for people with ongoing healthcare needs but benefits everyone.
5k viewsReviewed >2 years ago

Dr. Joseph Barkanswered
Dermatology 51 years experience
Hair: Hair conditioners smooth the tiny shingles on hairs so that they glide over each other easier.
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4.9k viewsReviewed >2 years ago

Dr. Joseph Barkanswered
Dermatology 51 years experience
Shaving: Shaving your hair will not make it grow stiffer or faster.
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4.9k viewsReviewed >2 years ago

Dr. Joseph Barkanswered
Dermatology 51 years experience
Eyebrows: Eyebrows do grow back even if they're shaved. It just takes a longer time.
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4.9k viewsReviewed >2 years ago

Dr. Caroline Cribarianswered
Psychiatry 25 years experience
Hair: Much of hair health is due to nutrition and lifestyle, water, and low stress.
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4.9k viewsReviewed >2 years ago

Dr. M. Christine Leeanswered
Dermatology 30 years experience
Healthy: Healthy hair needs natural oil but not too much or too little. Best to wash every other day.
Created for people with ongoing healthcare needs but benefits everyone.
4.9k viewsReviewed >2 years ago

Dr. Jeffrey Fromowitzanswered
21 years experience
Sulfate: Sulfate free shampoos are better for sensitive breakage prone hair.
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4.9k viewsReviewed >2 years ago

Dr. Harold Peltananswered
Ophthalmology 30 years experience
The: The type of skin you have affects the type of hair you have. Dry skin, dry hair.Oily skin, oily hair.
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4.9k viewsReviewed >2 years ago

Dr. Harold Peltananswered
Ophthalmology 30 years experience
You: You can prevent split ends, but you can't cure them except by trimming them off.
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4.9k viewsReviewed >2 years ago

Dr. Heidi Fowleranswered
Psychiatry 27 years experience
HAIR: Hair health: the average person grows six inches of hair per year.
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4.9k viewsReviewed >2 years ago

Dr. Heidi Fowleranswered
Psychiatry 27 years experience
HEALTHY: Healthy hair: the average person grows a half inch of hair per month.
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4.9k viewsReviewed >2 years ago

Dr. William Harrisanswered
Family Medicine 35 years experience
When: When you look at hair under a microscope, everybody's hair looks different -- like fingerprints.
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4.9k viewsAnswered >2 years ago

Dr. Syed H. Sajidanswered
General Adult Psychiatry; Child & Adolescent Psychiatry ( 1 yr. Fellowship), sees all types of patients for Medication Management from ages 6-99yo 31 years experience
The: The same nutritious food that are good for your body promote stronger, healthier hair.
Created for people with ongoing healthcare needs but benefits everyone.
4.9k viewsReviewed >2 years ago

Dr. Ihab Ibrahimanswered
Pain Management 31 years experience
If: If you don't try to burn it with blow drier, and curlers, guys will be happier for it.
Created for people with ongoing healthcare needs but benefits everyone.
4.9k viewsReviewed >2 years ago

A Verified Doctoranswered
42 years experience
Protein,: Protein, zinc, selenium, and biotin are all important for hair growth.
Created for people with ongoing healthcare needs but benefits everyone.
4.9k viewsReviewed >2 years ago

Dr. Osman Farooqanswered
Pediatrics - Neurology 22 years experience
When: When drying your hair with a towel, don't rub too hard, as this an break you hair follicles.
Created for people with ongoing healthcare needs but benefits everyone.
4.8k viewsReviewed >2 years ago

Dr. Emily Ridgwayanswered
23 years experience
Try: Try washing your hair less often. You can rinse with warm water daily but use shampoo less often.
Created for people with ongoing healthcare needs but benefits everyone.
4.8k viewsReviewed >2 years ago

Dr. Jane Steineranswered
Psychiatry 45 years experience
Ignore: When drying curly hair, use a white t shirt and not a towel to prevent frizz . It actually works!
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4.8k viewsAnswered >2 years ago

Dr. Ihab Ibrahimanswered
Pain Management 31 years experience
Alopecia: Alopecia areata is characterized by the sudden onset of discrete areas of non-scarring hair loss.
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4.8k viewsAnswered >2 years ago

Dr. Ihab Ibrahimanswered
Pain Management 31 years experience
Alopecia: Alopecia areata is characterized by the sudden onset of discrete areas of non-scarring hair loss.
Created for people with ongoing healthcare needs but benefits everyone.
4.8k viewsReviewed >2 years ago

Dr. Marsha Davisanswered
Internal Medicine 30 years experience
Ignore: It's a myth that: washing hair daily is good for your hair.
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4.7k viewsAnswered >2 years ago

Dr. Marsha Davisanswered
Internal Medicine 30 years experience
Ignore: Blow drying on high heat caused split ends.
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4.7k viewsAnswered >2 years ago

Dr. Vicki Levineanswered
Dermatology 43 years experience
Ignore: Unless you have a problem with your scalp it is probably best for your hair not to wash it everyday.
Created for people with ongoing healthcare needs but benefits everyone.
4.7k viewsAnswered >2 years ago

Dr. Trachella Johnson foyanswered
Family Medicine 22 years experience
Ignore: Sulfates used in shampoos that make them lather can dry your hair out.
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4.7k viewsAnswered >2 years ago

Dr. Trachella Johnson foyanswered
Family Medicine 22 years experience
Ignore: Hair can be over processed with too many chemicals.
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4.7k viewsReviewed >2 years ago

Dr. Tod Halleranswered
Ophthalmology 18 years experience
Ignore: Some people think dandruff shampoo will cure a dry scalp. It'll actually make the dryness worse.
Created for people with ongoing healthcare needs but benefits everyone.
4.6k viewsReviewed >2 years ago

Dr. Ryan Phasoukanswered
Family Medicine 20 years experience
Ignore: Trichoptilosis is the medical term for hair that has "split ends".
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4k viewsAnswered >2 years ago

Dr. Michael Fisheranswered
Dermatology 34 years experience
Ignore: Over-processing is the most common reason for dull hair.
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3.6k viewsReviewed >2 years ago

Dr. William Coutts iianswered
Family Medicine 28 years experience
Ignore: Healthy hair is more about eating a good nutritional diet, than anything that you put on your hair.
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3.5k viewsAnswered >2 years ago

Dr. Thomas Mcgowananswered
Specializes in Family Medicine
Ignore: If you are losing your hair, consider checking your ferritin level, should be over 50.
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3.2k viewsAnswered >2 years ago

Dr. Liza Shiffanswered
Anti-Aging Medicine 31 years experience
Ignore: Bleach blonde hair is less likely to be infected with lice!
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3.2k viewsAnswered >2 years ago
Similar questions
Fremont, CA
A 36-year-old male asked:
Please share some do's and don'ts when it comes to hair care.
92 doctor answers • 74 doctors weighed in

A Verified Doctoranswered
18 years experience
Comb: Comb your conditioner through your hair in the shower and then don't rinse before blotting dry.
Created for people with ongoing healthcare needs but benefits everyone.
5.3k viewsReviewed >2 years ago
Last updated Jan 15, 2019
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