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Biotin doesn't help hair growth in healthy people and can cause health risks if overused.

Visible light can damage skin and most sunscreens don't block it well; more research is needed on its effects and protection methods.

Amenorrhea is when a woman doesn't have periods, with primary amenorrhea starting by age 15 or within five years of breast development, and secondary amenorrhea when periods stop for three months. It affects 3-4% of women not pregnant, breastfeeding, or in menopause, mainly due to polycystic ovary syndrome, hypothalamic amenorrhea, hyperprolactinemia, and ovarian failure.

HGF/SF increases skin melanocytes but doesn't change melanin type or amount.

Changing the structure of the hair follicle's environment can affect hair quality but doesn't stop hair growth.

Prairie dogs with fewer neighbors are more stressed but their number of babies isn't affected.

Human hair matrix cells and dermal papilla fibroblasts can form early hair follicle structures but don't produce hair shafts yet.

Valproic Acid could potentially be used to treat immune-related conditions due to its ability to modify immune cell functions.

Nitric oxide is important for skin functions and both helps protect against and contributes to skin inflammation and sensitization.

Understanding the genetics of alopecia areata could lead to better treatments.

Different immune responses cause hair loss in scalp diseases, with unique patterns in scalp psoriasis possibly protecting against hair loss.

Sweating can potentially be controlled through olfactory receptors, with β-ionone playing a key role, and responses may vary between genders.

B cells can both help and hinder the body's defense against melanoma.

A woman's psoriasis improved after hepatitis C treatment with interferon, despite interferon's risk of worsening skin conditions.

Human hair follicles have a unique way of using energy and might use the Cori cycle; blocking CCR5 could help treat hair loss.

Finasteride treatment changes hormone levels in male pattern baldness patients.

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

Sebaceous glands play a key role in skin health, immunity, and various skin diseases.

Applying certain inhibitors to the skin can promote hair growth without harming cells.

Using fat-derived stem cells with the drug meglumine antimoniate can help control skin disease and reduce parasites in mice with leishmaniasis.

Hormone levels in hair vary across the head, with the highest concentration of a key hormone linked to hair loss at the top.

Feeding rats gamma-irradiated flour with pests affects the pests and does not significantly harm the rats.

taVNS reduces vitiligo symptoms in mice.

A young child with complete hair loss improved significantly with a combination of hair growth treatments and laser therapy.

Researchers developed a 3D skin model with its own immune and blood vessel cells to better understand skin health and disease.

HDAC inhibitors, like Vorinostat and Entinostat, can help regrow hair in alopecia areata.

Lotion with fucoidan from brown seaweed improved skin and reduced allergy symptoms in mice with dermatitis.

Alopecia areata in these mice is inherited, more common in young females, and can be treated with triamcinolone acetonide.

iNKT cells can help prevent and treat alopecia areata by promoting hair regrowth.

Leptin-deficient mice, used as a model for Type 2 Diabetes, have delayed wound healing due to impaired contraction and other dysfunctional cellular responses.