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Acne lesions start with changes in hair follicles and increase in inflammation, suggesting a cycle that could affect treatment strategies.

Epidermal stem cells are diverse and vary in activity, playing key roles in skin maintenance and repair.

Healthy Han Chinese have lower hair density than whites and Africans, and transplanting 300 hair units can nearly restore normal hair density.

Using platelet growth factors can improve hair density in transplants, especially for those with fine hair.

The Multi-Organ-Chip improves the growth and quality of skin and hair in the lab, potentially replacing animal testing.

Isotretinoin effectively reduces acne but causes dry skin, higher skin pH, more redness, and hair loss.

Miniaturized hairs stay connected to muscle in alopecia areata, allowing possible regrowth, but not in androgenetic alopecia.

Human alpha defensin 5 helps heal wounds, reduce bacteria, and grow hair on burned skin.

Scientists created a gel with nanoparticles to deliver medicine to hair follicles effectively.

Hair and skin can regenerate without bulge stem cells due to other compensating cells.

Hormone therapy affects hair growth in transgender individuals, with testosterone potentially causing hair loss in trans men and estrogen reducing facial/body hair in trans women; treatment options vary.

Non-scarring hair loss is common in lupus patients and can be diagnosed with specific hair and tissue tests.

Future hair cosmetics will be safer and more effective.

No treatment fully prevents hair loss from chemotherapy yet.

A genetic change in the EDAR gene causes the unique hair traits found in East Asians.

Microneedling helps increase the absorption of a melanin product into hair follicles, which may improve laser hair removal effectiveness.

Hair restoration can be achieved through non-surgical treatments like minoxidil, antiandrogens, phototherapy, and PRP procedures, or through surgical methods like hair transplantation. Continued treatment is needed to maintain results, and full results are visible after 12-18 months.

Finasteride and flutamide effectively reduce hirsutism in PCOS women, with flutamide also lowering hormone levels.

Monotreme hair structure and protein distribution are similar to other mammals, but their inner root sheath cornifies differently, suggesting a unique evolution from reptile skin.

Latanoprost-loaded nanotransfersomes could help treat hair loss by promoting hair growth.

The review suggests that a special cell-derived treatment shows promise for various skin conditions and hair growth but needs more research for confirmation.

Nanotechnology in dermatology shows promise for better drug delivery and treatment effectiveness but requires more safety research.

Niosomes are promising for skin drug delivery, offering benefits like improved drug penetration and stability.

The research created a detailed map of skin cells, showing that certain cells in basal cell carcinoma may come from hair follicles and could help the cancer grow.

SHED-CM can reduce hair graying and protect against damage from X-rays.

Using longer PEG chains helps nanoparticles penetrate hair follicles better, improving drug delivery for conditions like alopecia.

Hidradenitis suppurativa is caused by genetic factors, inflammation, bacteria, hormones, and lifestyle factors like obesity and smoking.

People with alopecia areata have higher levels of RBP4 protein and antibodies against it.

The document concludes that periocular hair disorders have various causes and treatments, and proper evaluation by specialists is important for management and prognosis.

White and yellow dots indicate severe female hair loss in dark skin.