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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.

Facial plastic surgery has evolved to focus on less invasive techniques and innovative technologies for cosmetic and reconstructive procedures.

Skin problems like acne, dry skin, and nail and hair changes are common in patients taking EGFR inhibitors.

Hair proteins have weak spots in their α-helical segments.

Researchers isolated a new type of stem cell from mouse skin that can renew itself and turn into multiple cell types.

Toxic shock syndrome is caused by a complex interaction of bacterial toxins and the immune system, and understanding this can help improve diagnosis and treatment.

The study developed a tool to predict how gut microbes process foods and drugs, showing that similar compounds often share metabolic pathways and effects.

The document suggests that the traditional understanding of hair growth cycles and alopecia may be inaccurate and that blood supply plays a significant role in hair growth and loss.

CD98hc's role in skin health decreases with age.

Stress and alcohol affect brain chemicals differently in rats, mice, and humans, influenced by genetic differences.

Activating Notch in adult skin causes T cells and neural crest cells to gather, leading to skin issues.

The document concludes that there is no agreed-upon best method for measuring drug delivery within hair follicles and more research is needed to validate current techniques.

Scientists created a long-lasting stem cell line from human hair that can turn into different skin and hair cell types.

ALA-PDT is effective and safe for chronic X-ray dermatitis, providing complete or partial remission.

Certain 4-azasteroids are effective at blocking the enzyme that processes testosterone in human skin and could help treat acne, excessive hair growth, and male pattern baldness.

PRP treatment improves hair density and thickness for alopecia, but needs more research.

The document explains how to identify different hair problems using a microscope.

Finasteride reduces hair growth and is safe for women with excessive hair.

Mice without collagen VI have slower hair growth normally but faster regrowth after injury.

Rice bran extract can potentially treat hair loss by promoting hair growth and increasing the number of hair follicles.

Finasteride reduces new brain cells in male mice, possibly causing depression.

Different tea tree oil mixtures absorb into hair follicles at varying levels, with microemulsion being the most effective.

Women with female pattern hair loss have higher levels of certain androgens, suggesting increased androgen exposure to hair follicles.

People with Seasonal Affective Disorder have different brain activity in certain areas when resting.

Loose anagen hair syndrome is caused by structural abnormalities in the hair follicle's inner root sheath.

Some people with heavy hair shedding might actually have a hidden form of alopecia, which can be identified by specific hair changes.

The research concluded that selection significantly shaped the genetic variation of the X chromosome, with certain regions affected by past selective events.

Stress in mice delays hair growth and treatments blocking substance P can partly reverse this effect.

Nd:YAG laser can reduce hair with multiple treatments, but permanent removal isn't guaranteed.

Minoxidil metabolizes similarly in monkeys and humans, but differently in dogs and rats.