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Current hair regeneration methods show promise but face challenges in maintaining cell effectiveness and creating the right environment for hair growth.

Trichoscopy is useful for quickly diagnosing different types of hair loss without needing biopsies.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

Biomimetic dermal papilla spheres can help regenerate hair to some extent.

Niosomes are promising for skin drug delivery, offering benefits like improved drug penetration and stability.

Exosomes can help promote hair growth and may treat hair loss.

About half of Taiwanese dermatologists use dermoscopy, mainly to improve diagnosis and detect cancer early, but cost and lack of training limit its wider use.

The Wnt signaling pathway is not a major factor in the development of keratoacanthoma, a type of skin tumor.

Many products for hair re-growth exist, but a perfect treatment without side effects has not yet been found.

PRP injections can increase hair density in people with androgenic alopecia.

Hair transplant surgery is a good cosmetic solution for people with little or no pubic hair, especially to boost their self-esteem.

P-cadherin is important for hair growth and health, and its problems can cause hair and skin disorders.

Light microscopy is useful for diagnosing different hair disorders.

Epidermal stem cells are diverse and vary in activity, playing key roles in skin maintenance and repair.

Scientists turned mouse stem cells into skin cells that can grow into skin layers and structures.

The long-pulse alexandrite laser effectively removes hair permanently.

The skin has multiple layers and cells, serves as a protective barrier, helps regulate temperature, enables sensation, affects appearance, and is involved in vitamin D synthesis.

Metformin helps with menstrual cycles and insulin levels in PCOS but is less effective for hair growth, diabetes prevention, and weight loss, and may improve fertility and reduce diabetes risk.

Hair follicle development is controlled by interactions between skin tissues and specific molecular signals.

Azelaic acid and anthralin are similarly effective for treating patchy hair loss.

The scalp's microorganisms significantly affect hair health and disease.

Both concentrations of triamcinolone acetonide are effective for hair regrowth in patchy alopecia areata, but 5 mg/mL is recommended to reduce side effects.

Hair follicles help substances penetrate the skin faster and more effectively.

Estrogen loss during menopause worsens skin health, but hormone replacement therapy may improve it, though more research is needed.

Coenzyme Q10 helps reduce aging in human hair.

Hair loss caused by genetics and hormones; more research needed for treatments.

A 9-year-old girl with a healthy immune system was successfully treated for a severe fungal scalp infection caused by Microsporum audouinii.

Genes affecting wool fiber thickness in Angora rabbits were identified, which could help breed finer wool.

The interdigital gland in crossbred sheep is similar to skin and has specialized structures for secretion.

Exosomes may help with hair growth and scar healing, but more research is needed.