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Normal hair thickness varies by scalp area and a mix of hair thicknesses is typical in healthy individuals.

Bimatoprost and clobetasol are both effective for scalp hair loss, but bimatoprost works faster, has fewer side effects, and grows more colored hair.

Estrogens and progesterone are key in regulating melasma pigmentation.

Female pattern hair loss involves thinning hair on crown and frontal scalp, diagnosed by hair ratio, and treated with minoxidil, antiandrogens, or hair transplantation.

Trichoscopy helps diagnose and monitor the treatment of fungal scalp infections in children.

Scientists created cell lines from balding patients and found that cells from the front of the scalp are more affected by hormones that cause hair loss than those from the back.

Trichoscopy and trichogram are useful for diagnosing hair and scalp conditions.

Androgens can cause hair growth in some areas and hair loss on the scalp.

The document describes how to tell different types of non-scarring hair loss apart by looking at hair and scalp tissue under a microscope.

Trichoscopy helps diagnose and monitor alopecia areata by looking at a combination of specific hair and scalp features.

Anti-cancer treatments can cause reversible hair loss, skin sensitivity, pigmentation changes, nail damage, and skin reactions, with a need for more research on managing these side effects.

The 2004 hair research meeting presented new findings on hair cell differentiation, genetic factors in hair loss, hair pigmentation, and potential targeted therapies.

The document concludes that individualized treatments for hair issues are effective, certain hair changes can indicate neurocutaneous diseases, specific lotions improve skin health, laser hair removal works but needs more study on long-term effects, men's cosmetics are diverse, peeling is effective but can have side effects, and facial pigmentation is often due to overactive skin cells.

UV photography can help identify people at higher risk for skin cancer, and male pattern baldness at age 45 is linked to a higher risk of certain skin cancers.

Different types of stem cells in the skin contribute to the variety of melanoma forms.

Greying hairs may be protected from alopecia areata.

Dermatoscopy is a useful tool for diagnosing hair disorders and can help choose samples for more detailed analysis.

Minoxidil absorbs poorly through skin, with low risk of side effects at 1-2% concentration.

The Trichoscan system was found to be inaccurate for measuring hair growth, needing better software to be useful.

Aging in hair follicle stem cells leads to hair graying, thinning, and loss.

Eyelashes protect the eyes, but more research is needed to understand how.

Tofacitinib therapy can effectively regrow eyebrows and eyelashes in some alopecia areata patients.

Some people experienced temporary hair loss after hair transplant surgery but recovered fully within 10 months.

Scalp cooling is the only FDA-approved method to prevent hair loss from chemotherapy, but other treatments like minoxidil and PRP are being tested.

Contact dermatitis may speed up hair loss in some cases.

Heptaminol may cause hair lightening in hemodialysis patients.

Chemotherapy often causes hair loss, which usually grows back within 3 to 6 months, but there's no effective treatment to prevent it.

Good nutrition may help prevent premature hair graying.

Acitretin treatment unexpectedly darkened a patient's gray hair.

Dermoscopy helps diagnose different types of hair loss and may reduce the need for biopsies.