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Organoids created from stem cells are used to model diseases, test drugs, and develop personalized and regenerative medicine.

Mast cells might contribute to hair loss by causing skin thickening.

Exosomes from skin cells can boost hair growth by stimulating a gene called LEF1.

A patient with a severe type of hair loss experienced partial hair regrowth after treatment with a specific light therapy and a medication called interferon α2a.

Premature hair greying may indicate a higher risk of metabolic problems.

Hair from people with seborrheic dermatitis is thicker scaled, more damaged, and thinner than healthy hair, and atomic force microscopy can help monitor the condition.

TLR2 helps control hair growth and regeneration, and its reduction with age or obesity can impair hair growth.

Pulsed-intense light can significantly reduce hair, with effectiveness depending on treatment number and timing, and has mild side effects.

Genetics and nutritional deficiencies are key factors in premature graying of hair.

Certain genes control the color of human hair by affecting pigment production.

Apoptosis may contribute to hair loss in androgenetic alopecia.

Certain small molecules can promote hair growth by activating a cellular cleanup process called autophagy.

GATA6 is important for maintaining and differentiating cells in a key area of human skin.

Minoxidil and ATRA together boost hair growth more effectively than minoxidil alone.

Activating the Wnt/β-catenin pathway could lead to new hair loss treatments.

The document concludes that hair is complex, with a detailed growth cycle, structure, and clinical importance, affecting various scientific and medical fields.

Combining low-level laser therapy and exosome therapy promotes hair growth.

Plant extracts may help prevent or reverse hair graying.

Optimal transplant density for Chinese male hair loss patients is 35-50 hair/cm², with minimum 106.88 hair/cm² left in donor area for esthetic satisfaction.

Cinnamon essential oil and virgin coconut oil hair tonic promoted hair growth, with the highest concentration performing better than the positive control.

Vitamin B3 may help prevent hair loss and promote hair growth by protecting scalp cells from stress and reducing hair growth-blocking proteins.

Men and women have different hairline restoration needs, with natural design being more complex for women, and hairline changes being important for transgender individuals' transitions.

Walter P. Unger suggests using advanced hair transplant techniques for broader coverage, as they provide natural results and use donor tissue efficiently, while also recommending personalized planning due to the unpredictable progression of baldness.

iPSCs show promise for hair regeneration but need more research to improve reliability and effectiveness.

White hair grows thicker and faster than black hair due to higher activity of growth-related genes and proteins.

Researchers made a cell line that grows quickly and can help with hair growth research.

Herbal products might promote hair growth with fewer side effects, but more research is needed to confirm their safety and effectiveness.

The document suggests that the traditional understanding of hair growth cycles and alopecia may be inaccurate and that blood supply plays a significant role in hair growth and loss.

The book details skin conditions in older adults, their link to mental health, cancer treatment importance, hair loss remedies, and managing autoimmune and itchy skin.

Hair disorders are caused by a complex mix of biology, genetics, hormones, and environmental factors, affecting hair growth and leading to conditions like alopecia.