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Hair straightening can damage hair and pose health risks, including exposure to carcinogens and hair loss.

Conditioners improved hair protein retention and combing ease, with some providing thermal protection.

2-iminothiorane hydrochloride improves hair waving permanence without damage.

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

The observed "toughening" in keratin was actually due to water evaporation, not a real change in keratin.

Scalp treatments increased hair density and reduced hair loss in Telogen Effluvium patients.

Hair absorbs moisture differently based on its structure and treatment, with changes occurring at 30% humidity.

The document concludes that skin stem cells are important for hair growth and wound healing, and could be used in regenerative medicine.

The document concludes that the 5 alpha-reductase enzymes are important in steroid metabolism and related to various human diseases, with inhibitors used to treat conditions like male pattern baldness and prostate issues.

Hormone therapy for trans individuals is effective and generally safe in the short term.

Early diagnosis and treatment, using finasteride, minoxidil, or hair transplantation, improves hair loss outcomes.

Low-dose finasteride may cause lasting sexual dysfunction and suicidal thoughts in young men.

Women with PCOS have fewer activated T cells in their ovarian follicles, which might affect fertility.

Researchers found a new way to create hair-growing structures in the lab that can grow hair when put into mice.

Organoids can help study COVID-19 and develop treatments, but face challenges like instability and limited renewal.

Cyproterone acetate treatment is safe and causes mild feminization, which increases with added estrogen.

Understanding facial anatomy and early management are key to preventing and treating complications from injectable fillers.

Dermoscopy now helps diagnose various skin, hair, and nail issues, improving patient care and treatment understanding.

Effective repair of bad hair transplants requires skilled techniques and careful use of donor hair, with strategies like reimplantation and camouflage, and new methods to minimize scarring.

Advancements in cultured models improve understanding and treatment of gallbladder cancer.

Finasteride causes harmful organ changes in female mice.

A protein called FERONIA helps control root hair growth in response to cold and low nitrogen by activating nutrient-sensing pathways in a plant called Arabidopsis.

Four genes affect hair follicle density in goats.

Bleomycin injections in mice cause skin thickening and hair loss.

Higher dihydrotestosterone may be linked to more inflammation in COVID-19 patients with low testosterone.

Obesity negatively affects the endometrium, leading to higher miscarriage risk and impaired cell function.

The best results in surgical hair restoration come from careful techniques, optimal use of limited hair supply, correct hair direction, saving hair for key areas, understanding scarring effects, and adjusting hair graft density.

Future hair cosmetics will be safer and more effective.

Human hair structure varies by ethnicity, and certain treatments can improve hair condition and appearance.

Applying conditioner in the middle of a perm process reduces hair damage.