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Understanding hair growth involves complex interactions between molecules and could help treat hair disorders.

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

The document concludes that more research is needed to better understand and treat primary cicatricial alopecias, and suggests a possible reclassification based on molecular pathways.

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

Hair follicles may soon be used more for targeted and systemic drug delivery.

Understanding hair follicle anatomy helps diagnose hair disorders.

Different types of stem cells with unique roles exist in blood, skin, and intestines, and this variety is important for tissue repair.

Horizontally sectioned scalp biopsies are more reliable for diagnosing hair loss in women when three samples are taken instead of one.

Different types of stem cells and their environments are key to skin repair and maintenance.

Fat-derived stem cells show promise for skin repair and reducing aging signs but need more research for consistent results.

Mouse hair follicle cells briefly grow during the early hair growth phase, showing that these cells are important for starting the hair cycle.

Prolactin contributes to hair loss by promoting hair follicle shrinkage and cell death.

Stress can stop hair growth in mice, and treatments can reverse this effect.

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

The article concludes that the wool follicle is a valuable model for studying tissue interactions and has potential for genetic improvements in wool production.

Ruby laser pulses best destroy hair follicles during the growth phase and effectiveness varies with laser intensity; melanin is key for targeting, and timing treatments can improve results.

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

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

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

Hair loss in men treated best with early medication or transplant, new treatments researched.

Hair follicles are hormone-sensitive and involved in growth and other functions, with potential for new treatments, but more research is needed.

There are many treatments for permanent hair loss disorders, but their effectiveness varies and there's no clear best option.

No treatment fully prevents hair loss from chemotherapy yet.

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

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

Lichen planopilaris is a chronic, scarring hair loss condition with no definitive cure, requiring accurate diagnosis and treatment to manage symptoms.

Wool follicles are complex, involving interactions between different cell types and structures.

The document concludes that understanding the genes and pathways involved in hair growth is crucial for developing treatments for hair diseases.

The skin protects the body and is constantly renewed by stem cells; disruptions can lead to cancer.

Hair follicle regeneration needs special conditions and young cells.