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Human skin acts like a hormone-producing organ, making and managing various hormones important for skin and hair health.

Keratin gene expression helps understand different types of skin cells and their development, and should be used carefully as biological markers.

Minoxidil may help treat hair loss by reducing inflammation-related gene activity in skin cells.

The nail matrix has a reduced immune response, protecting it from autoimmunity.

All-trans retinoic acid causes hair loss by increasing TGF-β2 in hair follicle cells.

Scientists made working hair follicles using stem cells, helping future hair loss treatments.

Capsaicin, found in chili peppers, can slow down hair growth by affecting skin cells and hair follicles.

The composition with carnitine, thioctic acid, and saw palmetto extract may effectively reduce inflammation in hair follicle cells.

Endocannabinoids help control mast cell activity in human skin.

UVB exposure in human skin causes macrophages to produce more IL-10 and less IL-12, leading to immunosuppression.

Stem cells could potentially rebuild missing structures in wounds, improving facial skin replacement techniques.

A type of collagen helps hair grow by boosting cell growth and activating a specific hair growth pathway.

Ginsenoside Rd may help improve skin aging by increasing collagen in the skin.

Patient-derived melanocytes can potentially treat vitiligo by restoring skin pigmentation.

The document concludes that new treatments for hair loss may involve a combination of cosmetics, clinical methods, and genetic approaches.

Skin cells and certain hair follicle areas produce hemoglobin, which may help protect against oxidative stress like UV damage.

Avicequinone C, a compound found in the Avicennia marina plant, can reduce hair loss by inhibiting a hormone linked to androgenic alopecia.

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

ATP increases melanin production in skin after UV exposure, with the P2X7 receptor being crucial for this process.

Ascorbigen increases hair cell growth in a lab setting but does not prevent hair loss from chemotherapy in mice.

Hair loss in Androgenetic alopecia (AGA) is due to altered cell sensitivity to hormones, not increased hormone levels. Hair growth periods shorten over time, causing hair to become thinner and shorter. This is linked to miscommunication between cell pathways in hair follicles. There's also a change in gene expression related to blood vessels and cell growth in balding hair follicles. The exact molecular causes of AGA are still unclear.

The document concludes that adult mammalian skin contains multiple stem cell populations with specific markers, important for understanding skin regeneration and related conditions.

Sophora flavescens extract may help hair grow by affecting growth factors and blocking a hair-related enzyme.

An enzyme other than TNAP might be responsible for vitamin B-6 metabolism in the skin.

Dermal-epidermal interactions are crucial for hair growth and maintenance.

A gene called BMAL1 plays a role in controlling hair growth.

T-cell reconstitution after thymus transplantation can cause hair whitening and loss.

The sebaceous gland has more roles than just producing sebum and contributing to acne, and new research could lead to better skin disease treatments.

Prolactin may be important for skin growth and immune function.

Ginsenoside Rb1 from Panax ginseng helps mink hair grow by activating certain cell signals.