A member asked:

Please share an interesting fact about hair care.

87 doctors weighed in across 78 answers

Blondes: Blondes have less hair follicles on their scalp than brunettes do = thinner hair.

Answered 5/2/2015

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Redheads: Redheads have less hairs than other hair colors.

Answered 2/25/2014

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Nails: Nails and hair are made of the same basic protein, called keratin.

Answered 5/19/2014

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On: On average, a single hair's life span is about 5 years.

Answered 7/14/2018

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The: The average scalp has about 100, 000 hairs.

Answered 12/30/2014

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Hair: Hair loss is sometimes related to thyroid imbalance and iron stores.

Answered 9/15/2017

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Some: Some medications may cause hair loss.

Answered 6/5/2013

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Washing: Washing your hair more often does not, generally, cause more hair loss.

Answered 9/16/2014

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Dr. Arthur Balin answered

Specializes in Dermatology

Dermatologists: Dermatologists are the experts in the medical, surgical and cosmetic treatment of skin, hair, nails.

Answered 7/17/2013

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Dr. Arthur Balin answered

Specializes in Dermatology

Dermatologists: Dermatologists are medical doctors who diagnose and treat skin, hair and nail conditions.

Answered 6/5/2013

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Dr. Arthur Balin answered

Specializes in Dermatology

Myth:: It's a myth that: if you cut your hair, it will grow faster.

Answered 4/7/2014

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Dr. Arthur Balin answered

Specializes in Dermatology

Human: Human hair grows in cycles with a growth phase followed by a resting phase.

Answered 9/29/2016

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Dr. Arthur Balin answered

Specializes in Dermatology

On: On average blondes have 120, 000 scalp hairs; brunettes have 100, 000; redheads have 80, 000.

Answered 8/13/2014

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Dr. Arthur Balin answered

Specializes in Dermatology

Tight: Tight plaiting of the hair, as in cornrows or pigtails, or tight ponytails can cause hair loss.

Answered 12/23/2016

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Dr. Arthur Balin answered

Specializes in Dermatology

Many: Many women develop diffuse thinning of the hair as they grow older. (androgenetic alopecia).

Answered 8/27/2018

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Dr. Arthur Balin answered

Specializes in Dermatology

Excess: Excess facial hair in women may indicate a hormonal imbalance.

Answered 1/6/2015

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Dr. Arthur Balin answered

Specializes in Dermatology

An: An enlarged pore is the opening of a follicle that has a tiny hair and a large active oil gland.

Answered 6/12/2017

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Dr. Arthur Balin answered

Specializes in Dermatology

There: There is no scientific evidence that plucking makes hairs coarser, or darker, or increases growth.

Answered 7/20/2014

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Dr. Arthur Balin answered

Specializes in Dermatology

Ingrown: Ingrown hairs: closely cut coarse curly beard hair may curve back and renter the skin.

Answered 5/29/2013

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Dr. Heidi Fowler answered

Specializes in Psychiatry

If: If you want healthy skin & hair ensure you have an adequate vitamin a intake.

Answered 6/13/2013

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Dr. Arthur Balin answered

Specializes in Dermatology

Boils: Boils are infections of the skin caused by bacteria usually starting in hair follicles.

Answered 4/4/2013

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Dr. Joshua Fox answered

Specializes in Dermatology

Blow: Blow dry your hair on cool setting so as to not dry out the hair so much!

Answered 9/29/2016

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Dr. Sophie Duriez answered

Specializes in Psychiatry

To: To keep hair healthy, choose good brand shampoo and avoid using it daily! once or twice a week is ok.

Answered 5/10/2016

5.2k views

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Dr. Arthur Balin answered

Specializes in Dermatology

Electrolysis: Electrolysis uses an electric current to kill hair at its source, the hair papillae.

Answered 6/16/2013

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Dr. Arthur Balin answered

Specializes in Dermatology

Colored: Colored or permed hair needs extra moisture, esp. In summer. Comb a dime sized dab of conditioner.

Answered 6/16/2013

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Dr. Arthur Balin answered

Specializes in Dermatology

Coloring: Coloring weakens the hair by breaking down the disulfide bonds in the hair shaft. Don't do it often.

Answered 6/16/2013

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Dr. Arthur Balin answered

Specializes in Dermatology

Colored: Colored hair: avoid products with lots of mineral oil or silicone which can strip color.

Answered 6/16/2013

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Dr. Arthur Balin answered

Specializes in Dermatology

Brittle,: Brittle, heat damaged hair: use shampoos with added moisturizers like glycerine, butylene glycol, ..

Answered 1/4/2015

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Dr. Arthur Balin answered

Specializes in Dermatology

If: If your neck is thick bring some hair forward from the sides of the neck or cut your hair in longish.

Answered 6/16/2013

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Dr. Geoffrey Rutledge answered

Specializes in Internal Medicine

Red: Red heads have less hairs than blonds or brunettes.

Answered 7/7/2016

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Dr. Geoffrey Rutledge answered

Specializes in Internal Medicine

Lasers: Lasers do not work on white or grey hair.

Answered 9/14/2013

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Thick: Thick scalp scale (dandruff) may respond to olive oil applied to the skin several times a week.

Answered 6/7/2014

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Sudden: Sudden onset of kinky curly or brittle hair can be associated with hypothyroidism.

Answered 1/15/2019

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Dr. Wenjay Sung answered

Specializes in Podiatry

The: The us spends about $20 billion annually on hair care products.

Answered 7/23/2018

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Wearing: Myth: wearing hats and helmets contributes to male-patterned baldness.

Answered 2/19/2015

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Biotin,: Biotin, zinc, and iron are all important vitamins and minerals for optimal hair growth.

Answered 7/7/2013

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Between: Between 50 and 100 hairs are shed each day on average. Shedding this level of hair is not abnormal.

Answered 6/18/2014

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You: You don't have to wash your hair daily. That dries it out!

Answered 3/31/2017

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A: A scalp massage and hair brushing is very relaxing and helps humans bond.

Answered 1/9/2015

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Avoid: Avoid ultraviolet light as much as possible as it damages hair.

Answered 7/9/2013

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Dr. Tod Haller answered

Specializes in Ophthalmology

Most: Most people assume they have dandruff when they have dry scalp. Dandruff shampoo will worsen it.

Answered 1/26/2018

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Dr. Tod Haller answered

Specializes in Ophthalmology

Most: Most people assume they have dandruff when they have dry scalp. Dandruff shampoo will worsen it.

Answered 7/5/2013

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No: No matter what techniques you recur to, you cannot add or make any of your hair longer.

Answered 7/14/2013

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Massing: It's a myth that massaging the scalp can stimulate hair growth.

Answered 7/16/2013

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Dr. Gregory LaMorte answered

Specializes in Periodontics

Once: Once you have found an anti-dandruff shampoo that works for you, keep on using it.

Answered 7/16/2013

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Dr. Gregory LaMorte answered

Specializes in Periodontics

Use: Use a mild shampoo. Stronger shampoos can irritate and dry out your hair.

Answered 1/3/2015

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Dr. Ihab Ibrahim answered

Specializes in Pain Management

Giving: Giving yourself a scalp massage is easy & can do to relieve tension, improve hair health!

Answered 7/24/2013

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Dr. Antoanella Calame answered

Specializes in Pathology

Chlorine: Chlorine and salt water can dry, discolor, and damage your hair. Make sure to rinse after you exit.

Answered 8/10/2014

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Hair: Hair conditioners smooth the tiny shingles on hairs so that they glide over each other easier.

Answered 1/27/2018

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Shaving: Shaving your hair will not make it grow stiffer or faster.

Answered 9/28/2016

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Eyebrows: Eyebrows do grow back even if they're shaved. It just takes a longer time.

Answered 5/25/2014

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Hair: Much of hair health is due to nutrition and lifestyle, water, and low stress.

Answered 5/8/2016

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Healthy: Healthy hair needs natural oil but not too much or too little. Best to wash every other day.

Answered 3/22/2014

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Sulfate: Sulfate free shampoos are better for sensitive breakage prone hair.

Answered 11/28/2013

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Dr. Harold Peltan answered

Specializes in Ophthalmology

The: The type of skin you have affects the type of hair you have. Dry skin, dry hair.Oily skin, oily hair.

Answered 9/23/2014

4.9k views

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Dr. Harold Peltan answered

Specializes in Ophthalmology

You: You can prevent split ends, but you can't cure them except by trimming them off.

Answered 9/24/2014

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Dr. Heidi Fowler answered

Specializes in Psychiatry

HAIR: Hair health: the average person grows six inches of hair per year.

Answered 9/11/2013

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Dr. Heidi Fowler answered

Specializes in Psychiatry

HEALTHY: Healthy hair: the average person grows a half inch of hair per month.

Answered 9/11/2013

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Dr. William Harris answered

Specializes in Family Medicine

When: When you look at hair under a microscope, everybody's hair looks different -- like fingerprints.

Answered 9/14/2013

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Dr. Syed H. Sajid answered

Specializes in General Adult Psychiatry; Child & Adolescent Psychiatry ( 1 yr. Fellowship), sees all types of patients for Medication Management from ages 6-99yo

The: The same nutritious food that are good for your body promote stronger, healthier hair.

Answered 12/10/2013

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Dr. Ihab Ibrahim answered

Specializes in Pain Management

If: If you don't try to burn it with blow drier, and curlers, guys will be happier for it.

Answered 9/16/2013

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Protein,: Protein, zinc, selenium, and biotin are all important for hair growth.

Answered 8/3/2015

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When: When drying your hair with a towel, don't rub too hard, as this an break you hair follicles.

Answered 5/3/2014

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Try: Try washing your hair less often. You can rinse with warm water daily but use shampoo less often.

Answered 10/16/2013

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Dr. Jane Steiner answered

Specializes in Psychiatry

Ignore: When drying curly hair, use a white t shirt and not a towel to prevent frizz . It actually works!

Answered 12/10/2013

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Dr. Ihab Ibrahim answered

Specializes in Pain Management

Alopecia: Alopecia areata is characterized by the sudden onset of discrete areas of non-scarring hair loss.

Answered 11/12/2013

4.8k views

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Dr. Ihab Ibrahim answered

Specializes in Pain Management

Alopecia: Alopecia areata is characterized by the sudden onset of discrete areas of non-scarring hair loss.

Answered 11/30/2013

4.8k views

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Dr. Marsha Davis answered

Specializes in Internal Medicine

Ignore: It's a myth that: washing hair daily is good for your hair.

Answered 4/3/2014

4.7k views

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Dr. Marsha Davis answered

Specializes in Internal Medicine

Ignore: Blow drying on high heat caused split ends.

Answered 11/23/2013

4.7k views

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Dr. Vicki Levine answered

Specializes in Dermatology

Ignore: Unless you have a problem with your scalp it is probably best for your hair not to wash it everyday.

Answered 12/21/2013

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Ignore: Sulfates used in shampoos that make them lather can dry your hair out.

Answered 12/22/2013

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Ignore: Hair can be over processed with too many chemicals.

Answered 1/11/2014

4.7k views

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Dr. Tod Haller answered

Specializes in Ophthalmology

Ignore: Some people think dandruff shampoo will cure a dry scalp. It'll actually make the dryness worse.

Answered 12/30/2014

4.6k views

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Dr. Ryan Phasouk answered

Specializes in Family Medicine

Ignore: Trichoptilosis is the medical term for hair that has "split ends".

Answered 6/6/2014

4k views

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Ignore: Over-processing is the most common reason for dull hair.

Answered 7/26/2015

3.6k views

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Dr. William Coutts ii answered

Specializes in Family Medicine

Ignore: Healthy hair is more about eating a good nutritional diet, than anything that you put on your hair.

Answered 11/16/2014

3.5k views

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Ignore: If you are losing your hair, consider checking your ferritin level, should be over 50.

Answered 2/19/2015

3.2k views

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Dr. Liza Shiff answered

Specializes in Anti-Aging Medicine

Ignore: Bleach blonde hair is less likely to be infected with lice!

Answered 2/19/2015

3.2k views

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