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Tiny pollution particles called PM2.5 can harm skin cells by causing stress, damage to cell parts, and cell death.

Minoxidil and finasteride treat hair loss in men, while minoxidil treats hair loss in women.

The skin is a complex barrier for drug penetration, but understanding its structure and interactions can improve drug delivery methods.

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

Metformin helps manage polycystic ovary syndrome by improving insulin resistance and ovulation, but more research is needed on its full effects.

The conclusion is that accurate diagnosis of different types of hair loss requires good teamwork between skin doctors and lab experts.

Hormone treatments for transgender individuals generally improve mental health and physical transition, with some health risks that require medical supervision.

Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.

Chemotherapy-induced hair loss significantly affects patients' well-being, and nurses are key in helping them cope, but more research is needed to find effective treatments.

Different types of stem cells in hair follicles play unique roles in wound healing and hair growth, with some stem cells not originating from existing hair follicles but from non-hair follicle cells. WNT signaling and the Lhx2 factor are key in creating new hair follicles.

Accurate diagnosis and effective oral treatment are key to managing tinea capitis and preventing its spread.

Tributyltin exposure causes sex changes, sterilization, and decline in the snail Ocinebrina aciculata, risking its extinction.

Stem cell self-renewal is complex and needs more research for full understanding.

Keratinocytes help heal skin wounds by interacting with immune cells and producing substances that kill pathogens.

Too much androgen can cause hair loss; finasteride may help.

Some viruses can cause cancer by changing cell processes and avoiding the immune system; vaccines and targeted treatments help reduce these cancers.

Masculine facial features may not reliably indicate heritable health, and more research is needed.

Matriptase is crucial for keeping epithelial tissues healthy and functioning properly.

Finasteride treats enlarged prostate and hair loss, but may cause side effects in some patients.

Exosomes could potentially enhance tissue repair and regeneration with lower rejection risk and easier production than live cell therapies.

Antibiotics can reduce acne but may lead to resistant bacteria, and understanding the skin's bacteria is important for treatment.

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

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

Silver nanoparticles coated with substances like PEG showed strong antibacterial effects and improved wound healing when used in hydrogels.

Low doses of some substances can be beneficial, while high doses can be harmful or toxic.

Men generally have more severe COVID-19 cases and higher death rates than women due to biological differences.

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

The document concludes that while significant progress has been made in understanding skin biology and stem cells, more research is needed to fully understand their interactions with their environment.

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

Children with atopic dermatitis often have sleep problems, affecting their growth and behavior.