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Tight junctions are key for skin protection and controlling what gets absorbed or passes through the skin.

Male pattern baldness involves genetics, hormones, and needs better treatments.

Follicular Unit Extraction (FUE) is a less invasive hair transplant method with minimal scarring, suitable for about 60% of patients, especially those needing fewer grafts and quicker recovery.

Humans lost body hair relatively recently in evolution.

Stem cell self-renewal is complex and needs more research for full understanding.

Comma hairs are a specific sign of tinea capitis when viewed with videodermatoscopy.

Turmeric may have benefits for skin health, but more research is needed to confirm its effectiveness.

Low fluence photoepilation temporarily removes hair by targeting the hair follicle's pigmented area without severe damage.

Facial feminization surgery is effective in helping transgender women appear more feminine and has high patient satisfaction.

Different types of stem cells and their environments are key to skin repair and maintenance.

TGF-β signaling is crucial for stem cell maintenance, differentiation, and has implications for cancer treatment.

Electrolysis is effective for permanent hair removal, but technique is key to avoid scarring, and sometimes hormonal treatment is needed for women with hirsutism.

Over one-third of women experience hair loss, with female-pattern hair loss being most common, and treatments include minoxidil and possibly hair transplantation.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

Hibiscus rosa-sinensis leaf extract helps hair grow longer and faster.

Hair analysis can detect cocaine use but doesn't accurately show the amount or timing of use.

The skin's internal clock affects healing, cancer risk, aging, immunity, and hair growth, and disruptions can harm skin health.

Mice hair growth patterns get more complex with age and can change with events like pregnancy or injury.

Stem cell plasticity is crucial for wound healing but can also contribute to cancer development.

Targeting androgen receptors could be a promising way to treat skin disorders with fewer side effects.

Diffuse alopecia in women may be related to androgens and iron deficiency, and basic hormone and nutrient screening is useful.

The telogen phase of hair growth is active and important for preparing hair follicles for regeneration, not just a resting stage.

Rhodococcus equi causes severe pneumonia in young foals, and effective vaccines are needed due to foals' weak immune responses.

The research identified various cell types in mouse and human teeth, which could help in developing dental regenerative treatments.

Blocking the Wnt pathway could lead to new treatments for cancer and tissue repair but requires careful development to avoid side effects.

Minoxidil and finasteride can slow hair loss and stimulate regrowth, but won't restore all lost hair or reverse complete baldness.

Targeting hair follicles can improve skin treatments and reduce side effects.

Overexpressing Dsg3 in mice skin causes excessive cell growth and abnormal skin development.

PRP injections improve hair thickness for baldness.

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