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Human skin can make serotonin and melatonin, which help protect and maintain it.

β-catenin in the dermal papilla is crucial for normal hair growth and repair.

Lichen Planus is a less common condition affecting skin and mucous membranes, with various types and associated risk factors, challenging to diagnose, significantly impacts life quality, and may have a risk of cancerous changes in oral lesions.

Certain proteins, Lgr5 and Lgr6, are important markers of adult stem cells and are involved in tissue repair and cancer development.

New nanofiber technology improves wound healing by supporting cell growth and delivering treatments directly to the wound.

Mutations in the SRD5A3 gene cause a new type of glycosylation disorder by blocking the production of a molecule necessary for protein glycosylation.

Apoptosis is essential for human skin development and forming a functional epidermis.

TGF-β is crucial for tissue repair and can cause diseases if not properly regulated.

Dermoscopy is a useful tool for identifying features of skin conditions, but more research is needed to define its role in dermatology.

Hair loss and aging are caused by the breakdown of a key protein in hair stem cells.

Msx and Dlx genes are crucial for development, controlling cell behaviors like growth and differentiation through their roles as gene regulators.

Nerves are crucial for the regeneration of various body parts in many animals.

Eph receptors and ephrins may be promising targets for treating diseases, but more understanding is needed for effective and safe therapies.

More dermal papilla cells in hair follicles lead to larger, healthier hair, while fewer cells cause hair thinning and loss.

Laser hair removal is the most requested cosmetic procedure and has become a scientifically-based treatment suitable for all skin types.

A gene called APCDD1, which controls hair growth, is found to be faulty in a type of hair loss called hereditary hypotrichosis simplex.

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

Stress stops hair growth in mice by causing early hair growth phase end and harmful inflammation through a specific nerve-related pathway.

The hedgehog signaling pathway is crucial for hair growth but not for the initial creation of hair follicles.

Dermatologists need to understand hair products to treat hair and scalp issues better.

Hair and wool have complex microscopic structures with microfibrils and varying cystine content.

Fibromodulin might help reduce scarring if increased in adult wounds like in fetal skin that heals without scars.

Telocytes might help with skin repair and regeneration.

Dermatoscopy and videodermatoscopy are useful for diagnosing and monitoring various skin, hair, and nail conditions.

AXR3 and SHY2 genes control the growth and timing of root hair development in plants.

Lichen planus is a skin condition that can resolve on its own, is linked to hepatitis C, and increases the risk of skin cancer.

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.

Skin aging is due to impaired stem cell mobilization or fewer responsive stem cells.

Transplant success has improved with better immunosuppressive drugs and donor matching.