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Skin aging is largely due to differences in stiffness and elasticity between skin layers, leading to wrinkles.

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 rejuvenation surgery has evolved to yield natural results with low complication rates, and more men and older patients are choosing this surgery.

The Cross-section Trichometer is a new tool that can measure hair quantity and detect hair loss and growth.

Most children with CNS tumors on targeted therapy had skin reactions, which were generally treatable without stopping the therapy.

Melanocytes are diverse cells important for pigmentation and skin health, influenced by genetics and environment.

DNA can predict physical traits like eye and hair color accurately, especially in Europeans, but predicting other traits and in diverse populations needs more research.

PHAT may improve hair growth better than PRP alone.

Hypothyroidism harms rat skin, but topical triiodothyronine may help improve it.

Pica disorder in central Iraq is mainly found in females and is linked to low iron levels; treatment with iron improves most patients.

Women's ovarian hormones and adrenal androgens change throughout life, affecting hair loss and health.

New treatments targeting skin stem cells show promise for skin repair, anti-aging, and cancer therapy.

Autophagy changes the protein makeup of hair.

A new tool can analyze hair to detect changes due to hormones, genetics, and aging.

Fat cells in the skin help start healing and form important repair cells after injury.

EAAT4 decreases with age, harming skin function and calcium balance.

Older mice have stiffer skin with less elasticity due to changes in collagen and skin structure, affecting aging and hair loss.

Understanding how DHT works is important for diagnosing and treating hormone-related disorders.

Blocking androgen activity in newborn rats affects body weight and appetite-related hormones differently in males and females.

Eating fewer calories may slow skin aging and improve skin health through various biological changes.

Alopecia patients have more mast cells in their scalps, especially in severe cases and older age, with alopecia areata showing the highest increase.

Hair protein analysis might help identify a person's ethnicity, sex, and age in forensics.

The rat model showed early perimenopause with regular cycles and low hormones, and late perimenopause with irregular cycles and higher hormone levels.

Older men should openly discuss sexual health with doctors to improve their quality of life.

Non-surgical procedures can help reduce wrinkles and stimulate skin repair by understanding skin aging at the molecular level.

Erosive pustular dermatosis in elderly people may be linked to aging immune systems and skin damage.

Silybum marianum flower extract may help increase hair growth and decrease hair loss.

Hormones like testosterone and estrogen significantly affect hair growth and structure.

Vitamin E affects liver metabolism, enhancing stress resistance, reducing blood clotting, and altering hormone processing.

Women may need different blood pressure guidelines than men for heart disease prevention.