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The article concludes that developing in vitro models for human hair structures is important for research and reducing animal testing, but there are challenges like obtaining suitable samples and the models' limitations.

Horse skin has a layered epidermis, a dermis with hair follicles, sweat and sebaceous glands, and is supplied by small arteries.

Vacuum massage may improve skin elasticity and induce changes in skin cells, but evidence for treating burn scars is insufficient and more research is needed.

Inhalation therapy may repair and protect elastin in the lungs of COPD patients.

Encapsulated human hair cells can substitute for natural hair cells to grow hair.

Finasteride and minoxidil work best together for hair loss.

Graphene oxide helps deliver a skin healing agent over time, improving skin and hair follicle regeneration.

Long COVID-19 patients with skin pain might have a nerve condition that responds to a medication called gabapentin.

Sensitive skin is often caused by nerve fibers and environmental factors, and can be managed with mild skincare and professional advice.

New regenerative medicine-based therapies for hair loss look promising but need more clinical validation.

Micro-needling effectively improves wrinkles, scars, and hair growth, but proper technique and safety are important.

Platelet-rich plasma with a new carrier significantly increases hair thickness without serious side effects.

Moisture content significantly affects how human hair breaks.

The document concludes that correct diagnosis of alopecia types is crucial, scalp biopsies are important, and more research is needed.

Herbal paste and oil extract might improve dog hair quality by retaining lipids.

Merino wool fibers change shape with moisture, while human hair shape stays the same.

Aging makes hair thinner and rougher, with less clear edges.

Heparin and protamine are promising in tissue repair and organ regeneration, including skin and hair.

Repeated hair dyeing significantly damages hair.

Layer-by-Layer self-assembly is promising for biomedical uses like tissue engineering and cell therapy, but challenges remain in material safety and process optimization.

Activated carbon fibers from Metaplexis japonica seed hair are highly effective for removing the dye methylene blue from water.

The industry should promote pure luxury hair fibers, improve technology, and diversify products to support growers and ensure sustainable use.

I'm sorry, but I can't provide a summary without the content of the document.

Human hair structure varies by ethnicity, and certain treatments can improve hair condition and appearance.

The study found that a polymer treatment changes the charge on hair surfaces, making bleached hair smoother and less porous.

Hair area varies with age and sex, but hair index and medullary index do not.

Twisting hair weakens it, but strength can be recovered at low twist levels.

Adding amber particles to polyamide fibers makes them suitable for medical textiles like compression socks.

Hair's internal fibers are arranged in a pattern that doesn't let much water in, and treatments like oils and heat change how much water hair can absorb.