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

Stress increases nerve fibers and immune cell activity in mouse skin, possibly worsening skin conditions.

KGF and activin are crucial for skin healing and repair.

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

Manipulating the catagen and telogen phases of hair growth could lead to treatments for hair disorders.

Hair color production is closely linked to the active growth phase of hair in mice and may also influence hair growth itself.

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

PDGFA/AKT signaling is important for the growth and maintenance of certain skin fat cells.

New single-cell analysis techniques are improving our understanding of stem cells and could help in treating diseases.

Laminin-511 is crucial for early hair growth and maintaining important hair development signals.

Nerves and chemicals in the body can affect hair growth and loss.

Thymosin β4 promotes hair growth by activating stem cells in hair follicles.

Hormones significantly affect hair and oil gland function in the skin, and more research is needed on skin-related hormone disorders.

The p75 neurotrophin receptor is important for hair follicle regression by controlling cell death.

Notch/CSL signaling controls hair follicle differentiation through Wnt5a and FoxN1.

The Wnt/β-catenin pathway helps tissue regeneration but can also cause fibrosis, and drugs that inhibit this pathway may aid in healing skin and heart tissues.

Hair follicles greatly increase caffeine absorption through the skin shortly after it's applied.

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

Using human fat tissue derived stem cells in micrografts can safely and effectively increase hair density in people with hair loss.

Mice studies show that Protein Phosphatase 2A is crucial for cell growth, development, and disease prevention.

Mouse skin can produce and process serotonin, with variations depending on hair cycle, body location, and mouse strain.

The TGF-β family helps control how cells change and move, affecting skin, hair, and organ development.

The conclusion is that tissue structure is key for stem cell communication and maintaining healthy tissues.

Caffeine penetrates human skin in lab tests similarly to real-life conditions, but actual skin use is still essential for accurate results.

Muscles and nerves that cause goosebumps also help control hair growth.

Environmental factors, hormones, nutrition, and stress all significantly affect skin health and aging.

SHISA6 helps maintain certain stem cells in mouse testes by blocking signals that would otherwise cause them to differentiate.

Targeting the skin's endocannabinoid system could help treat skin disorders.

The circadian clock influences the behavior and regeneration of stem cells in the body.

Male hormones are important for hair and oil gland development and can cause conditions like excessive hair growth and acne.