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Two red-haired men with alopecia areata regrew black hair instead of red.

Polydopamine is a safe, effective, and permanent hair dye that turns gray hair black in one hour.

Hair analysis can detect drug use but is costly and interpretation is complex.

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 study found specific hair and scalp patterns for different types of hair loss in Koreans, noting racial differences affect diagnosis.

SDF-1/CXCL12 and its receptor CXCR4 are crucial for melanocyte movement in mouse hair follicles.

Cancer treatments often cause hair disorders, significantly affecting patients' quality of life, and better management methods are needed.

Androgenetic alopecia is a common hair loss condition caused by testosterone effects on hair follicles, leading to thinner, shorter, and less pigmented hair, diagnosed using scalp dermoscopy and treated with topical minoxidil, antiandrogen agents, and 5-alpha reductase inhibitors.

Hair is important for protection, social interaction, and temperature control, and is made of a growth cycle-influenced follicle and a complex shaft.

Gamma rays did not change hair follicle density but increased white and hypopigmented hairs in mice.

Different stem cells are key for hair growth and health, and understanding their regulation could help treat hair loss.

Human hair follicle organ culture is a useful model for hair research with potential for studying hair biology and testing treatments.

Inherited color dilution in rabbits is linked to DNA methylation changes.

Vimentin and transthyretin proteins are linked to black coat color in sheep.

Male-pattern hair loss is largely influenced by genetics, with key genes identified.

Triparanol therapy can cause hair loss and skin dryness without inflammation or damage to hair follicles or skin structures.

Scalp micropigmentation is a safe way to hide hair loss and scalp scars by tattooing tiny dots that look like hair follicles.

A woman's hair turned white after taking a cancer drug called dasatinib.

The treatment promotes hair growth, improves hair density, and reduces skin irritation.

The skin's layers protect, sense, and regulate the body's internal balance, but can be prone to cancer.

Some psychoactive drugs can cause skin reactions, with carbamazepine having a higher risk, and stopping the drug and seeing a dermatologist is important.

Certain chemicals cause hair graying in black mice but not yellow mice.

Hair grays due to oxidative stress and fewer functioning melanocytes.

Graying hair happens due to aging and might be delayed by new treatments.

Pigmented concealing powders can improve the look of hair density for people with hair loss but need daily application and may not work well in wet conditions.

Hair color and length affect metabolite profiles in hair, so they should be considered in hair analysis.

Rice bran extract boosts melanin production in hair follicles.

Darker hair colors may increase the risk of alopecia areata, while lighter hair colors may decrease it.

Low ERCC3 gene activity is linked to non-pigmented hair growth.

Pilocarpin can cause hair regrowth and color change in some cases but not in others, and it may have side effects in animals.