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Redheaded people have higher levels of a vitamin D precursor, suggesting red hair may be an adaptation for better vitamin D synthesis in areas with less sunlight.

Neurohormones help control skin health and could treat skin disorders.

Hormones significantly affect hair growth and loss, with potential for new treatments.

Healthy aging can be promoted through physical activity, lifestyle changes, and certain treatments.

Certain skin drugs and topical agents, including some natural extracts and fragrances, can cause allergic reactions. Some hair dyes and extensions, as well as minoxidil, a hair growth treatment, can also cause allergies. Botulinum toxin A can effectively reduce sweat but may have temporary side effects.

RAPK is a rare skin disorder with pigmented spots, mainly on hands and feet, starting in youth.

The dermatology book is useful but has some organizational issues.

Hair loss and excessive growth treated with various options, including new laser technology.

The article concludes that developing in vitro models for human hair structures is important for research and reducing animal testing, but there are challenges like obtaining suitable samples and the models' limitations.

Researchers can now observe live cell processes in the Drosophila midgut for extended periods.

Melanocytes from human fetal hair follicles were successfully cultured, showing potential for hair disease research and clinical use.

Mueller-Hinton Agar is better for testing antifungal susceptibility in Microsporum canis and Nannizzia gypsea.

DermaCult™ Keratinocyte Expansion Medium allows human skin cells to grow longer while keeping their ability to develop properly.

Human hair follicles can be grown in a lab for about a week.

Culturing Dermal Papilla Cells and Hair Follicle Stem Cells in 3D conditions can significantly improve hair regeneration potential.

The new "differential stripping" method effectively measures how much substance gets into hair follicles.

A nonviral method was developed to label and culture human hair follicle stem cells.

Rat hair follicle stem cells can be successfully cultured and may be useful for creating tissue-engineered hair, vessels, and skin.

New methods efficiently isolate dermal papilla cells from hair follicles, preserving their characteristics better than traditional methods.

The best method to isolate and culture hair follicle stem cells in fine-wool sheep is a combination of two-step enzymatic digestion and mechanical separation.

Keratinocytes help keep hair follicle cells and skin cells separate in 3D cultures, which is important for hair growth research.

The new system can grow hair in the lab and test hair growth treatments.

Hair follicle cultures are effective for studying cell communication and testing chemicals.

A wool hair keratin hydrogel is promising for growing cells and tissue engineering.

Researchers improved mouse skin cell culture methods and created a similar immortal cell line, but need to clarify their methods and benefits.

A new method accurately measures iron in small samples with high sensitivity and low cost.

Using a perfusion system and 3D spheroid culture improves the growth of corneal cell layers for tissue engineering.