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Human skin produces sex hormones like estrogen and testosterone, influenced by ARO and StAR, which may affect skin elasticity and hair growth.

The effects of estrogen on human scalp hair growth are unclear and need more research.

Gray hair may be caused by lower antioxidant activity in hair cells.

Oral minoxidil helps hair regrowth in 80% of alopecia patients, but only 18% see cosmetic improvement.

Oxidative stress may contribute to hair loss in alopecia areata and antioxidants could potentially help as a treatment.

Human hair follicle stem cells can turn into multiple cell types but lose some of this ability after being grown in the lab for a long time.

The "Two-Cell Assemblage" assay is a new, simple method to identify substances that may promote hair growth.

Chicken egg yolk peptides can promote hair growth by increasing a specific growth factor.

Scalp flaps are used for reconstruction, considering factors like inelasticity, hair growth, and blood supply, with techniques adapting to age-related changes in vascularity.

Ethosomes are a promising method for treating hair loss by delivering drugs directly to the scalp.

PGD2 stops hair growth and is higher in bald men with AGA.

The document concludes that skin-derived precursors can be grown and may help in hair growth and skin repair.

Tramadol and THC-COOH can be detected in hair for several months after stopping use.

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.

Activating Notch signaling can kill basal cell carcinoma cells.

The device applies substances directly to body tissues, improving cell transplant and treatment processes.

Understanding the scalp's five-layer structure is crucial for better surgical outcomes and fewer complications.

Injecting lab-grown hair cells into the scalp can regrow hair.

Hair transplant combining scalp and beard hair with PRP was successful for scarring alopecia.

Injections of special skin cells showed potential in treating hair loss, with some participants experiencing increased hair density.

Using lasers and fat grafting before hair transplant improves hair growth on scarred skin.

Deep Plane Fixation in scalp surgeries allows for more tissue removal with less tension, leading to better healing and less scarring.

Deep Plane Fixation in scalp surgeries allows for more tissue removal with less tension and minimal scarring.

Baldness might be caused by scalp weight pressing on hair follicles.

Using a strong allergy medicine too often on the scalp can cause swelling and inflammation.

Japanese researchers created new hair follicles from human cells that grew hair when put into mice, and other findings showed a link between eye disease severity and corneal thickness, gene mutations affecting hearing and touch, and the safety of the shingles vaccine for adults over 50.

Scalp flaps are stiffer than skin from other body areas, which helps in planning reconstructive and cosmetic head surgeries.

Menopausal women have higher androgen levels, which can cause symptoms like facial hair growth and low sexual desire.

Male-pattern baldness might be caused by the effect of hormones on scalp blood vessels.

Spermidine may help reduce hair loss and deserves further testing as a treatment.