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

Pregnancy can cause skin darkening, varicose veins, more sweating, hair growth, hair loss after birth, nail changes, and gum inflammation.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

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

Stem cells in the hair follicle are regulated by their surrounding environment, which is important for hair growth.

Microneedles help improve skin appearance and deliver skin treatments effectively, but safety concerns need more research and regulation.

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

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

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

TRP channels in the skin are important for sensation and health, and targeting them could help treat skin disorders.

Hair follicles produce and respond to melatonin, affecting hair growth and sensitivity to estrogen.

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

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

The hydrogel with a 1:3 ratio of hydroxyethyl cellulose to hyaluronic acid is effective for delivering drugs through the skin to treat acne.

Scientists turned rat thymus cells into stem cells that can help repair skin and hair.

Liposomes could improve how skin care products work but are costly and not very stable.

Melatonin helps regulate hair growth and protects the hair follicle from stress.

Olive oil compounds may help prevent cancer in animals, but human results are mixed.

Lampreys have a functional vitamin D receptor that may help detoxify harmful substances.

Traction alopecia is more common in African women than girls, especially when traction is applied to chemically relaxed hair; avoiding such hairstyles may reduce the risk.

Exosomes from dermal papilla cells can help grow hair and might treat hair loss.

Treatments for melanin disorders exist, but more effective options needed.

Sponge helps heal wounds faster with less inflammation and better skin/hair growth.

Skin has specialized touch receptors that can tell different sensations apart.

E211 G>A gene linked to lower risk of severe prostate cancer and hair loss.

The 190-kbp domain contains all human type I hair keratin genes, showing their organization and evolution.

The protein folliculin, involved in a rare disease, works with another protein to control how cells stick together and their organization, and changes in this interaction can lead to disease symptoms.

Mice lacking a key DNA methylation enzyme in skin cells have a lower chance of activating stem cells necessary for hair growth, leading to progressive hair loss.

Progress has been made in skin and nerve regeneration, but more research is needed to improve methods and ensure safety.

Fetal skin cells from a cell bank heal wounds faster and with less scarring than adult cells.