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Skin and hair renewal is maintained by both fast and slow cycling stem cells, with hair regrowth primarily driven by specific stem cells in the hair follicle bulge. These cells can also help heal wounds and potentially treat hair loss.

Most American men experience hair loss by age 50, with limited effective treatments available and new options not expected soon.

The document explains the diagnosis and characteristics of woolly hair nevus and alopecia neoplastica.

Curved human hair has different structures on each side, which might cause its shape and is similar to wool.

Many substances, including chemicals and metals, can cause skin reactions; careful handling and identification of allergens are crucial to prevent dermatitis.

The document explains how shampoos clean, rinses condition, one-step shampoos offer convenience, and hair growth promoters aim to prevent hair loss, emphasizing the importance of scientific evidence for their effectiveness.

Scientists made working hair follicles using stem cells, helping future hair loss treatments.

Bleaching hair changes its structure and weakens it, which is important for understanding hair damage and creating treatments.

The PCR technique can identify genetic differences in a wool-related gene among different sheep breeds, which may help improve wool and pelt quality.

Treating scalp issues with anti-dandruff shampoo improves hair health.

Men have more tryptophan in their hair than women, and it increases with age and is higher in darker and grey or white hair.

Ethosomes improve black tea extract absorption in hair dye.

The study found that white hair in vitiligo has specific patterns and structures, which vary with the stage of the disease and may be similar to another hair condition.

New imaging techniques show testosterone delays hair growth and shrinks follicles in mice, but have limited depth for viewing.

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

Disabling the FGF5 gene in sheep leads to longer wool.

The study found a specific peptide that helps detect TGase 3 activity in skin and hair follicles.

The study developed a new way to create hair-growing tissue that can help regenerate hair follicles and control hair growth direction.

Overexpression of FGF5s makes Chinese Merino sheep grow longer and heavier wool.

Hair conditioners with argan oil or camellia oil improve the strength and color of bleached hair.

Nanoparticle-based drug delivery to hair follicles is more effective when tested under conditions that match skin behavior.

HSPGs help control stem cell behavior, affecting hair growth and offering a target for hair loss treatments.

A new hydrogel with micronized amnion helps achieve better, scar-free skin healing.

Researchers made a mouse model with curly hair and hair loss by editing a gene.

c-Myc activation in mouse skin increases sebaceous gland growth and affects hair follicle development.

Human hair keratin can be used in many medical applications.

Hard skin features like scales, feathers, and hair evolved through specific protein changes in different animal groups.

TTD hair brittleness is caused by multiple structural abnormalities.

Scaffold-based strategies show promise for regenerating hair follicles and teeth but need more research for clinical use.

Basonuclin 2 is vital for the development of facial bones, hair follicles, and male germ cells in adult mice, and its absence can lead to dwarfism and abnormal follicles.