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Nanoparticles improve drug delivery through the skin but more research is needed on their long-term effects and skin penetration challenges.

Guidelines for diagnosing common hair loss include detailed history, clinical examination, and various diagnostic techniques.

The Sonic hedgehog pathway is crucial for new hair growth during mouse skin healing.

Aging causes skin stem cells to work less effectively.

Androgens, like testosterone, are crucial for early testicular descent in rats.

Young adults have about 230,000 tactile nerve fibers, decreasing 5-8% per decade with age.

Dextran sulfate was found to be toxic and ineffective for treating HIV.

Keratose, derived from human hair, is a non-toxic biomaterial good for tissue regeneration and integrates well with body tissues.

Male hormones affect COVID-19 severity and certain drugs targeting these hormones could help reduce the risk.

Understanding hair follicle anatomy helps diagnose hair disorders.

Sonic hedgehog signaling is crucial for hair growth and maintaining hair follicle identity.

The document recommends using both clinical evaluation and various measurement methods to assess skin greasiness, considering factors like temperature and hormones.

PRP treatment improves hair growth, and the device used can affect results, with some being more effective.

Adam10 enzyme is crucial for healthy skin and proper Notch signaling.

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

Modulating BMP activity changes the number, size, shape, and type of ectodermal organs.

Macrophages help heal nerves by aiding the maturation of Schwann cells and are important for nerve repair.

Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.

Finasteride helps increase hair growth in men with hair loss.

Damage to skin releases dsRNA, which activates TLR3 and helps in skin and hair follicle regeneration.

Obesity is linked to various skin problems and may increase the risk of skin cancer.

Fat cells in the skin help start healing and form important repair cells after injury.

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

Testosterone's muscle-building effects do not require its conversion to DHT.

Cytokeratin 19 and cytokeratin 15 are key markers for monitoring the quality and self-renewing potential of engineered skin.

Macrophages help regrow hair by activating stem cells using AKT/β-catenin and TNF.

Hair grows faster in the morning and is more vulnerable to damage from radiation due to the internal clock in hair follicle cells.

Tiny particles from stem cells help activate hair growth cells and encourage hair growth in mice without being toxic.

Lignans and neolignans from plants may help protect against various health issues, including cancer and heart disease.

Finasteride may cause long-lasting sexual side effects.