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Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.

The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.

Some medications might reverse gray hair, especially those that reduce inflammation or stimulate pigment production, and vitamin B might help.

The conclusion is that accurate diagnosis of different types of hair loss requires careful examination of tissue samples and understanding of clinical symptoms.

Genetics, stress, and health issues can cause early hair greying, which affects self-esteem, and there's no cure, only hair dye.

Researchers created human hair follicles using a new method that could help treat hair loss.

Activating Nrf2 protects human hair follicles from oxidative stress and helps prevent hair growth inhibition.

UVB radiation harms hair growth and health, causing cell death and other changes in human hair follicles.

Stressed fibroblasts greatly increase melanin production in hair, skin, and eye cells, mainly due to a growth factor called bFGF.

Animal models, especially mice, are essential for advancing hair loss research and treatment.

iNOS contributes to hair loss in obese diabetic mice and blocking it may encourage hair growth.

Using radiation to make mice's hair turn gray helps study and find ways to prevent or reverse hair graying.

Lamivudine might reverse hair graying and needs more research for potential treatments.

Scalp cooling can help prevent chemotherapy-induced hair loss with a 50-90% success rate and is safe for patients.

6.1% of patients seeking PRP for hair loss had undiagnosed cicatricial alopecia, which PRP cannot treat.

Alopecia areata, a type of hair loss, is likely an autoimmune disease with a genetic link, but its exact cause is still unknown.

Nanoparticle-based herbal remedies could be promising for treating hair loss with fewer side effects and lower cost, but more research is needed.

The document concludes that treatments for female hair loss and excess body hair are available, but managing expectations is important.

AGA causes hair loss by shrinking hair follicles due to DHT binding, and can be treated with finasteride and minoxidil.

Marie Antoinette syndrome causes sudden hair whitening, but its exact cause is unknown.

Hormones and genes affect hair growth and male baldness.

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

In vivo lineage labelling is better than in vitro methods for identifying and understanding stem cells.

Consider benefits and risks of new alopecia treatments for safety.

Dynamic, light touch is sensed through a common mechanism involving Piezo2 channels in sensory axons.

Human skin has multiple layers and functions, with key roles in protection, temperature control, and appearance.

Sheep wool follicles absorb different amino acids at various rates and locations, which could affect wool growth based on diet and genetics.

The nucleus is key in controlling skin growth and repair by coordinating signals, gene regulators, and epigenetic changes.

The hair cuticle is made of tough proteins that protect the hair, but more research is needed to fully understand its structure.

Future hair cosmetics will be safer and more effective.