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Blocking 5α-reductase can harm memory and brain structure, and increase harmful brain changes in male mice used for Alzheimer's disease research.

Sex hormones, especially estradiol, can change chicken feather shapes and colors.

Thyroid hormones and androgens affect gene expression in frog reproductive organs differently between males and females.

Androgen receptors found in monkey scalps, similar to humans, affect hair growth.

Europe needs a clear system to watch over cosmetics for safety and to make sure product claims are true.

ERβ has potential in treating prostate cancer and neurodegenerative diseases, but human studies are needed before clinical use.

Scientists identified a group of human skin cells with high growth and regeneration potential.

A new non-invasive method can analyze skin mRNA to understand skin diseases better.

Researchers found 44 proteins that change during different hair growth stages and may be important for hair follicle function.

Liaoning Cashmere goat hair follicles show synchronized growth patterns with lowest activity in May.

Skin's epithelial stem cells are crucial for repair and maintenance, and understanding them could improve treatments for skin problems.

The study concluded that both estrogen and androgen receptors, which decrease with age, are linked to skin aging and may be hormonally regulated.

Aging reduces the ability of human hair follicle cells to form new cell colonies.

Alopecia areata patients have lower zinc, copper, and selenium levels than healthy people.

A complex of 5-aminolevulinic acid and glycyl-histidyl-lysine peptide may help increase hair count in male pattern hair loss without side effects.

Finasteride affects frog testes by increasing testosterone, decreasing 5α-DHT, and impacting genes related to reproduction and other functions.

Researchers found that certain lipids, especially vitamin D3, are lower in prematurely grey hair than in pigmented hair.

The study concluded that a protein important for hair strength is regulated by certain molecular processes and is affected by growth phases.

Two mouse mutations cause similar hair loss despite different skin changes.

Different whale and dolphin species have unique whisker follicle structures, suggesting they might use their whiskers in various ways.

Different body parts have varying levels of certain hair follicle markers.

Saw palmetto supplements may reduce prostate cancer cell growth without being toxic.

Charnoly bodies could be a marker for cell damage, and certain nutrients and proteins might prevent them, potentially helping with brain diseases and cancer.

Fulvestrant solution doesn't help hair loss in men and postmenopausal women.

wAMD patients have higher oxidative stress, suggesting antioxidant treatment may help.

Low-level laser therapy did not reduce licking or improve lesions in dogs with ALD but did increase hair growth.

Using a combination of specific cell cycle regulators is better for safely keeping hair root cells alive indefinitely compared to cancer-related methods.

Adding antihistamines to topical corticosteroid and cryotherapy may improve hair regrowth in alopecia areata patients.

New probes were created to effectively measure specific enzymes involved in fat metabolism, which could help develop new drugs.

Current therapies cannot fully regenerate adult skin without scars; more research is needed for scar-free healing.