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Aging causes hair to gray and thin, with the timing of graying varying by race, and factors like oxidative stress and genetics can lead to hair loss.

The article concludes that advancements in hair cosmetics require dermatologists to stay informed about products and their potential risks, including allergies and higher risks for hairdressers.

Scientists created early-stage hairs from mouse cells that grew into normal, pigmented hair when implanted into other mice.

A new plant extract from Avicennia marina could potentially be used to treat common hair loss.

Hair transplantation has improved with techniques that increase graft survival and patient satisfaction for more natural results.

Chemical treatments on bleached black hair change its internal structure by breaking and reforming bonds, and treatments with hydrolyzed eggwhite protein help repair it.

TrichoScan effectively diagnoses different types of hair loss and is linked to low iron stores in patients.

Ethanol spreads well on hair at low humidity but less so at higher humidity due to water condensation.

The EDAR gene greatly affects hair thickness in Asian populations.

Permanent waving weakens hair by altering its protein structure.

α3β1-integrin is crucial for maintaining normal hair follicle shape and function but not needed for the development of the surrounding skin.

Substance from human umbilical cord blood cells promotes hair growth.

Using an enzyme and keratin treatment can significantly repair and strengthen damaged hair.

The document explains how hair follicles develop, their structure, and how they grow.

Longer time setting curls overnight leads to better curl retention.

Doctors should diagnose hair loss by examining the patient and possibly doing tests, and then treat it based on the type, which may prevent permanent hair loss.

Low-dose oral minoxidil safely treats hair loss, with hypertrichosis as main side effect.

Testosterone treatment in trans men increases body and facial hair and may lead to hair loss over time, but severe skin issues are rare.

The document concludes that more research is needed to understand excessive hair growth in women with normal hormone levels and regular ovulation.

The document suggests using standardized methods to track and measure hair loss in alopecia areata, including patient self-assessment and a 50% improvement in specific scores as a treatment goal.

L-cysteine slows down the breaking of bonds in hair due to electrostatic interactions.

New treatments are available for managing ingrown hair inflammation.

Treat the front and middle scalp before the vertex in hair transplants, aim for good density, use non-surgical options for young people, and customize treatment for natural results.

Premature graying of hair is often linked with other health issues, but treatment with biotin, zinc, and calcium pantothenate is not very effective.

Drugs penetrate scalp skin better than abdominal skin, with scalp hair follicles aiding in higher drug delivery.

Using sharp tools and the right techniques in hair transplant surgery leads to less damage to hair follicles.

Topical cetirizine improves hair density and thickness in androgenetic alopecia, but more research is needed.

Cuscuta reflexa extracts helped regrow hair in rats with drug-induced hair loss.

The document reports a unique case of woolly hair with a combination of conditions not previously seen together.

The review concluded that keeping the hair-growing ability of human dermal papilla cells is key for hair development and growth.