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Hair follicle regeneration is possible but challenging, especially in humans, due to the need for specific cells and a better understanding of how they signal growth.

Synthetic hair implants can cause severe scalp problems and removing them improves conditions; natural hair transplants are safer and more effective.

New technique implants pigment in scalp with less pain and damage.

Aging men face unique health issues like erectile dysfunction, prostate problems, and baldness.

Most Sudanese married women in the study used contraceptives and knew about them, but many didn't know about emergency contraceptives or extra benefits beyond family planning.

George Ernest Rogers was a notable scientist who made important discoveries about hair and wool proteins.

AGA causes hair loss by shrinking hair follicles due to DHT binding, and can be treated with finasteride and minoxidil.

Scientists have found a way to create hair follicles from skin cells of newborn mice, which can grow and cycle naturally when injected into adult mouse skin.

Chitosan nanofiber scaffolds improve skin healing and are promising for wound treatment.

Human hair follicles can regenerate after removal, but with low success rate.

Drug addicts often have scars, skin color changes, blocked veins, and bruising, with severe ulcers from barbiturate injections.

The spiny mouse is a unique menstruating rodent that can help us understand menstruation and reproductive disorders.

Hoxc13 is linked to seasonal hair growth in Cashmere goats and is affected by melatonin.

Finasteride can treat prostatic haematuria, but its use is controversial.

Artificial hair fibers help treat scalp scars with few complications and a 20% yearly fiber fall rate.

Melatonin given to pregnant rabbits improved their babies' fur quality.

Flumethasone causes wool shedding in Merino wethers, with recovery in about 60 days.

Human hair follicles may provide a noninvasive way to diagnose diseases and have potential in regenerative medicine.

Scientists found ways to identify and collect skin stem cells, which vary by skin area and are delicate.

Dermal papilla cells are key for hair growth and color, influencing hair type and size, and their interaction with stem cells could help treat hair loss and color disorders.

Implant safely and effectively treats hair loss.

Hair transplantation is highly effective with careful technique and attention to patient needs.

Surgical therapies for vitiligo vary in effectiveness, with combination therapy and medical tattooing recommended for better results.

Artificial hair fibers help treat scalp scars with few complications and a 20% yearly fiber fall rate.

Hair follicle stem cell transplants can reverse liver cirrhosis by blocking harmful cell activation.

Melatonin makes cashmere grow earlier and more by increasing certain gene activity in goats.

Tissue engineering could be a future solution for hair loss, but it's currently expensive, complex, and hard to apply in real-world treatments.

Combination therapies for androgenetic alopecia work best but can have significant side effects and costs.

The review concludes that innovations in regenerative medicine, tissue engineering, and developmental biology are essential for effective tissue repair and organ transplants.

Microneedles are promising for long-acting drug delivery and can improve patient compliance, but more data is needed to confirm their effectiveness.