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Permanent hair dyes use chemicals that react with hydrogen peroxide to create color.

Using A132 hair dye with sunlight can cause skin damage and hair loss.

m-Aminophenol in hair dye can cause skin cell toxicity and stress responses.

Repeated dyeing and shampooing cause hair color loss and damage.

Permanent hair dye mixtures can irritate and damage the skin.

Monoethanolamine-based hair colorants can cause more damage to hair than ammonia-based ones.

A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.

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

A new hair treatment using a natural polyphenol complex improves hair strength, reduces static, and protects against UV damage.

Twisting hair weakens it, but strength can be recovered at low twist levels.

Henna mixed with PPD can cause skin reactions, scarring, and a specific type of baldness, and needs more research to understand these effects.

Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.

Higher hair levels of zinc and chromium were linked to less cognitive decline in very old people.

Grape seed oil improved hair quality the most, followed by rosehip and safflower seed oils, and reduced damage from shampoo.

Frequent hair coloring and styling can damage hair and cause breakage or loss.

Different species and human skin models vary in their skin enzyme activities, with pig skin and some models closely matching human skin, useful for safety assessments and understanding the skin's protective roles.

The document concludes that more research is needed to reduce frequent hospital visits, addiction medicine education improves with specific training, early breast cancer surgery findings are emerging, nipple smears are not very accurate, surgery for older melanoma patients doesn't extend life, a genetic condition in infants can often be treated with one drug, doctors are inconsistent with blood clot medication, a certain gene may protect against cell damage, muscle gene overexpression affects many other genes, and some mitochondrial genes are less active in mice with tumors.

Plant extracts can help prevent hair loss and promote hair growth.

Growing hair follicles have high mitochondrial activity and ROS in specific regions, aiding hair formation.

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SHED-CM can reduce hair graying and protect against damage from X-rays.

Topical Vorinostat shows promise for treating alopecia areata by promoting hair regrowth.

The new topical botanical formulation significantly regrew hair in all five patients without side effects.

Immuno-cosmeceuticals from chicken egg yolk can effectively repair and improve damaged hair.

Regulating cell death in hair follicles can help prevent hair loss and promote hair growth.

The microbiome may be linked to hair loss and could be a target for new treatments.

Essential oils from Curcuma species, like turmeric, have compounds that can fight inflammation, cancer, and bacteria, and can also stimulate hair regrowth in bald males.

Seaweeds contain beneficial compounds with potential uses in food, cosmetics, and health, but more research is needed to improve extraction and safety.

Jojoba oil is highly valued for its diverse medicinal and industrial uses.

Caffeine improves hair growth, thickness, and reduces shedding.