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Bleaching hair removes its protective top layer and exposes more hydrophilic groups, changing its chemical surface and affecting how it interacts with products.

Skin and hair can help us understand organ regeneration, especially how certain stem cells might be used to form new organs.

Polarized dermoscopy is slightly better than nonpolarized for diagnosing hair disorders, with each method having its own strengths.

Finasteride and minoxidil together promote hair growth better than either alone.

Hormone therapy affects hair growth in transgender individuals, with testosterone potentially causing hair loss in trans men and estrogen reducing facial/body hair in trans women; treatment options vary.

Targeted therapies for advanced skin cancer often cause hair and nail problems, which need managing to avoid changing the treatment dose.

Two specific hair keratin genes are active during hair growth and decline as hair transitions to rest.

Smad1 and Smad5 are essential for hair follicle development and stem cell sleepiness.

Chitosan and surface-deacetylated chitin nanofibers may help treat hair loss.

The 3D scaffold helped maintain hair cell traits and could improve hair loss treatments.

Scientists created tiny pH-sensing gels that can safely measure the pH levels inside hair follicles.

Body and beard hair can be used for hair restoration in severely bald patients, but the technique is complex and costly.

Having a lot of gray hair and hair loss are linked to more severe COVID-19.

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

Older adults commonly experience hair loss and nail disorders due to aging and health changes, affecting their quality of life.

Bleaching hair causes significant damage by breaking down proteins and fatty acids.

Researchers found a new gene, hacl-1, that is active in mouse hair follicles during hair growth and may be important for hair biology.

Hair and scalp disorders significantly affect self-esteem, and using cosmetic products like conditioners and styling aids can improve hair health and appearance.

Hair sunscreens are important for maintaining hair's cosmetic value.

Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.

Hair and serum levels of zinc, copper, and iron are similar in people with alopecia areata and healthy individuals.

Hair and nails are similar keratin structures with different shapes and growth, affected by the same diseases and environmental factors.

Hair care products don't cause hair loss if used correctly.

Good haircare and communication with doctors are key for managing hair loss.

Hair gets thinner, grayer, and changes texture with age due to genetics, environment, and cellular changes, affecting the growth cycle.

The document concludes that clinicians should be aware of common hair and scalp disorders in women of African descent and that more research is needed to develop effective treatments.

Hair cortisol is a reliable stress indicator in cattle but may not be valid for pigs.

Human hair keratin genes are similar to mouse genes and are specifically expressed in hair follicles.

Antler velvet hair and body hair of red deer have different structures that help with protection and insulation.

Lupus can cause hair loss and nail changes, with treatments available for both.