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Hair color affects light reflection, with black hair having higher cuticle angles and lighter hair showing less specular reflection.

Some chemicals can permanently or temporarily remove color from skin and hair, which can be distressing and is not well-regulated in cosmetics.

A wearable device using NIR light may help treat hair loss non-invasively.

Microneedles combined with light therapy can improve skin disease diagnosis and treatment.

Near-infrared LED light improves skin rejuvenation and hair growth better than white LED light.

Innovative methods are reducing animal testing and improving biomedical research.

Digital games are part of new media but need a deeper look at their complex nature and cultural roots.

Encapsulating hair loss drugs in cyclodextrins improves their solubility and reduces scalp irritation.

PlacMA hydrogels from human placenta are versatile and useful for cell culture and tissue engineering.

The document explains various skin conditions and their treatments.

Low-level laser therapy can stimulate hair growth and increase hair density, making it a promising treatment for hair loss.

Fetal skin heals without scarring due to unique cells and processes not present in adult skin healing.

Phytosomes improve the body's absorption of plant extracts for better health benefits.

Gold nanoparticles show promise for treating inflammatory bowel disease by reducing inflammation and colon injury.

The document concludes that skin stem cells are important for hair growth and wound healing, and could be used in regenerative medicine.

Dehydroepiandrosterone (DHEA) is a prohormone important for producing sex steroids and has potential health benefits.

Hair and nail cells share similar proteins, indicating a common differentiation pathway.

The nanofibers with two growth factors improved wound healing by supporting structure, preventing infection, and aiding tissue growth.

Human skin can make serotonin and melatonin, which help protect and maintain it.

Metformin helps with menstrual cycles and insulin levels in PCOS but is less effective for hair growth, diabetes prevention, and weight loss, and may improve fertility and reduce diabetes risk.

The skin has a complex immune system that is essential for protection and healing, requiring more research for better wound treatment.

The document concludes that the understanding of scar formation is incomplete and current prevention and treatment for hypertrophic scars and keloids are not fully effective.

Treatments that reduce oxidative stress and fix mitochondrial problems may help heal chronic wounds.

Niosomes are a promising, stable, and cost-effective drug delivery system with potential for improved targeting and safety.

Understanding different species' regeneration can improve mammalian healing.

The immune system plays a key role in tissue repair, affecting both healing quality and regenerative ability.

Two main types of fibroblasts with unique functions and additional subtypes were identified in human skin.

The document concludes that understanding hair follicle biology can lead to better hair loss treatments.

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.