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Human hair has different protein structures in its cuticle and cortex.

Ultraviolet rays damage hair, smoking may cause hair loss, and good nutrition is important for hair health, but genetics mainly decide hair thickness.

Different halogens on progesterone derivatives can either block or mimic male hormone effects, depending on their type and amount.

Anticonvulsant drugs may cause temporary chromosomal abnormalities.

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

The Beverly Hills Diet is unscientific, potentially harmful, and could cause serious health issues.

Certain diets may help with hair growth in people with different types of hair loss.

Patients with chronic graft-versus-host disease often have skin problems like vitiligo and alopecia areata.

Thermoresponsive nanogels show promise for delivering medicine through the skin but need more safety testing and regulatory approval before clinical use.

Scientists created keratinocyte cell lines from human hair that can differentiate similarly to normal skin cells, offering a new way to study skin biology and diseases.

Reducing copper (II) ion levels in hair can decrease hair damage.

Scientists successfully made a human growth factor in a plant, which could help with hair growth and bone development.

The study found that expanded skin regenerates similarly to normal skin, with 77 genes playing a role in the process.

Eating a balanced diet with specific nutrients is important for menopausal women to manage hair loss.

Coumarin derivatives cause skin irritation, but coumarin itself does not.

Hair can indicate early signs of metabolic disorders, with issues like protein deficiency stopping hair growth.

Fenugreek leaf extracts significantly promoted hair growth in mice with alopecia.

Deer antler velvet serum helps hair grow and is safe for skin.

PP2Acα is essential for proper hair and skin development.

Tiny natural vesicles from cells might help treat hair loss.

The African spiny mouse heals skin without scarring due to different protein activity compared to the common house mouse, which heals with scarring.

Heat damages hair, with Asian hair losing more protein than Caucasian hair.

The genes KRT25 and SP6 affect curly hair in horses, with KRT25 also causing hair loss. If both genes are mutated, the horse gets curly hair and hair loss. KRT25 can hide the effect of SP6.

Different tests are used to see how hair care products affect hair, and choosing the right test is important for accurate results.

Understanding hair biology is key to developing better treatments for hair and scalp issues.

Platelet-rich plasma and microneedling could potentially help hair growth in people with alopecia areata, but more research is needed.

Botanical extracts can protect and repair bleached hair.

Softer hydrogel surfaces help maintain hair growth-related functions in skin cells.

The study concluded that hair growth in mice is regulated by a stable interaction between skin cell types, and disrupting this can cause hair loss.

Different combinations of human hair keratins affect how hair fibers form.