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As people age, their hair follicles produce less pigment, leading to gray and white hair, due to factors like reduced enzyme activity and damage to melanocyte DNA.

4D scaffolds made with melt electrowriting can change shape for use in medicine.

Microneedles offer a promising, painless way to treat skin diseases but need improvements for better use.

A new method accurately detects minoxidil in hair lotions, revealing discrepancies in labeled content.

Bioinspired conductive materials and advanced bioprinting can improve tissue regeneration by creating smart, adaptable scaffolds.

Human hair waste can be valuable in engineering and materials due to its unique properties.

Nanoparticles with more oleic acid improved the delivery and stability of the drug spironolactone.

Fetal environments contain various chemicals that may disrupt hormones.

Scientists created a colored thread-like material containing a common hair loss treatment, which slowly releases the treatment over time, potentially offering an effective, neat, and visually appealing solution for hair loss.

Certain cells from hair follicles can create new hair and contribute to hair growth when implanted in mice.

Hair's strength and flexibility come from its protein structure and molecular interactions.

Substance P helps hair grow longer and faster.

Plant oils and polymers can help protect African hair from damage during styling.

Combining ultrasound and microneedles improves drug delivery through the skin.

Different techniques measure hair properties to ensure cosmetic products work.

Hair follicle culture helps study hair growth but has limitations in modeling the full hair cycle.

Isolated patchy heterochromia with pili annulati can occur without other health issues.

The new technique PÂTÉ improved the amount of scalp tissue removed in surgeries.

Papain and bisulfite break down human hair by dissolving parts of it.

Different scaffold patterns improve wound healing and immune response in mouse skin, with aligned patterns being particularly effective.

3D-printed microneedles improve drug delivery by being precise, cost-effective, and less invasive.

Platelet-Rich Plasma (PRP) therapy can promote hair growth and improve facial aesthetics, including reducing acne scars and facial burns, and it works best with three initial monthly injections.

Hair disorders are caused by a complex mix of biology, genetics, hormones, and environmental factors, affecting hair growth and leading to conditions like alopecia.

Chronic exposure to sunlight may worsen male pattern baldness and protecting the scalp from the sun could slow it down.

The document concludes that understanding how adult stem and progenitor cells move is crucial for tissue repair and developing cell therapies.

Graying hair happens due to aging and might be delayed by new treatments.

Microneedle patches offer painless, effective drug delivery and are suitable for all ages.

Human hair varies widely and should be classified by curl type rather than race.

African hair has the most lipids, while Caucasian hair is more hydrated and stronger.

A patient had painful swollen lymph nodes after a cosmetic skin and hair treatment, suggesting doctors should warn about this risk.