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Stressed fibroblasts greatly increase melanin production in hair, skin, and eye cells, mainly due to a growth factor called bFGF.

Prolactin affects when mice shed and grow hair.

Different species and human skin models vary in their skin enzyme activities, with pig skin and some models closely matching human skin, useful for safety assessments and understanding the skin's protective roles.

Estrogen increases blood vessel growth factor production, while testosterone blocks this increase.

Prolactin affects when mice shed and grow hair.

Some vitamin D analogs can thicken skin and reduce pore size like a common acne treatment, with one analog also affecting skin growth factors.

Wharton's jelly-derived stem cells were safely used to treat four alopecia patients, resulting in hair regrowth in all of them.

Faulty LEF1 activation causes faster skin cell differentiation in premature aging syndrome.

Vitamin D3 and its analogues affect skin cell growth and development depending on cell density, calcium levels, and serum presence.

Adding fetal calf serum to the medium kept Merkel cells alive and changed their shape.

Mouse hair follicles grow best in a special medium, especially when cut and from adult mice.

Human scalp hair follicles grow well in Williams E medium, which may help with hair transplants.

Human hair follicles can grow and stay healthy for up to 8 days in a lab setting.

Balding hair follicle cells are smaller, grow less well, and need more effort to culture than non-balding cells.

Different lab conditions and light treatment methods change how human skin cells respond to light therapy.

Researchers developed a quick and easy way to get and grow cells from the base of human hair follicles.

Researchers created a lab model to study human hair growth, showing it can grow and self-regulate outside the body.

Obesity changes androgen levels in women with PCOS, leading to higher testosterone relative to androstenedione.

High levels of male hormones and irregular periods best predict how well PCOS patients will respond to metformin treatment.

Scientists made structures that look like human hair follicles using stem cells, which could help grow hair without using actual human tissue.

Male hormones affect oil-producing skin cells differently based on their body location, and the drug spironolactone can reduce these effects.

Rice bran extract boosts melanin production in hair follicles.

Scientists have developed a method to keep chicken feather follicles alive and structurally intact in a lab for up to a week.

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.

Hair follicle culture helps develop new treatments for hair loss.

New culture method keeps human skin stem cells more stem-like.

Lab-grown nail cells show characteristics similar to natural nail and hair.

Blocking EGFR in skin cells doesn't majorly increase inflammation markers.

Hair follicle cells can help heal wounds and study skin diseases.

Scalp hair follicle culture has limits for testing minoxidil's hair growth effects.