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Hormones and genetics affect hair growth and patterns, with some changes reversible and others not.

The current methods for diagnosing polycystic ovary syndrome are too vague and may lead to misdiagnosis and problems in research.

Skin grafts are effective for chronic leg ulcers, especially autologous split-thickness grafts for venous ulcers, but more data is needed for diabetic ulcers.

Research on epidermal stem cells has advanced significantly, showing promise for improved clinical therapies.

Nanotechnology improves hair care products by enhancing ingredient stability, targeting treatment, and reducing side effects, but more research on its toxicity is needed.

Skin aging is largely due to differences in stiffness and elasticity between skin layers, leading to wrinkles.

Micropigmentation is a widely accepted tattooing technique for hiding cosmetic issues and medical uses, with permanent results and few side effects, but risks infection if not done with sterile tools.

Different species and human skin models vary in their skin enzyme activities, with pig skin and some models closely matching human skin, useful for safety assessments and understanding the skin's protective roles.

Dermoscopy is useful for diagnosing various skin, hair, and nail disorders and can reduce the need for biopsies.

The conclusion is that small hair follicles cause baldness in macaques, and treatments like antiandrogens and minoxidil can prevent hair loss and promote regrowth.

Microneedles with enhancer effectively promote hair growth and increase hair density.

Iontophoresis improves minoxidil delivery for alopecia treatment.

A new hair loss treatment uses tiny needles to deliver a drug-loaded lipid carrier, promoting hair growth more effectively than current treatments.

Dogs could be good models for studying human hair growth and hair loss.

Ethosomes improve drug delivery through the skin but may have side effects like irritation.

Early-stage skin cells help regenerate hair follicles, with proteins SDF1, MMP3, biglycan, and LTBP1 playing key roles.

Some chemicals absorbed through the skin can cause serious health problems.

Proper education can prevent traction alopecia in women of color.

The superficial temporal artery flap is a reliable method for reconstructing complex facial defects with minimal complications.

Puberty often causes skin issues like acne and excessive sweating, and treatments require patience as results may vary.

Platelet-rich plasma may help hair follicle cells grow by affecting certain genes and pathways.

Tofacitinib nanoparticles can safely and effectively treat alopecia areata by targeting hair follicles.

Skin doctors should recognize and treat conditions like hair-pulling and skin-picking early, often using therapy and medication, to help 50-70% of patients.

Using a scalp flap for hair transplantation gives denser, faster results than older methods, but it's complex and needs careful planning.

Male pattern baldness is an unintended side effect of the body's use of androgens for muscle growth, especially in those genetically prone to it.

Certain spices may help prevent and treat skin cancer, but more human trials are needed.

The surgical technique of scalp advancement and pretrichial brow lift shortens the forehead and lifts brows, is good for women and transgender women with high foreheads, but not recommended for men and has some risks.

A cat's hyperactivity and hair loss were caused by eating valproic acid but improved after stopping access to the drug.

Hair restoration techniques have improved but still rely on limited donor hair, with new methods like cloning and gene therapy being explored.

Age, gender, and hair loss affect scalp characteristics differently in young Caucasian adults.