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Lipid content and structure affect water absorption in different hair types.

Hair absorbs molecules differently based on their size, charge, and love for water, and less at higher pH; this can help make better hair products.

Dyes can penetrate human skin and hair follicles up to 1.2 mm deep and the sebaceous gland can store dye; Indocyanine Green lotion was made for safe dyeing and monitoring.

Diffusion in artificial sebum is mainly influenced by molecular size and is much faster than in skin lipids.

Removing external lipids from hair reduces moisture and increases strength, while removing internal lipids decreases water permeability.

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

The model better predicts how water-loving and fat-loving substances move through the skin by including tiny pores and hair follicle paths.

Hair removal methods damage the skin barrier and affect substance penetration.

Hair can absorb and transfer opiates when soaked in water, with damaged hair absorbing more.

Lotions release minoxidil better than creams, with a recommended mix of propylene glycol, water, and ethanol improving effectiveness.

Ethosomes improve skin absorption of finasteride more than other methods.

Tectona grandis leaf extracts, especially with propylene glycol, may be promising for topical hair loss treatments.

Internal lipids in keratin fibers, like wool and hair, reduce water absorption and release.

Different substances can affect how well the skin absorbs minoxidil, a hair loss drug. Caprylic acid helps the skin absorb it the best, followed by propylene glycol and water.

Older thin hair is not just thinner but also has different shape, structure, and stiffness.

The hydrogel helps heal diabetic wounds quickly and effectively.

Deleting the Sox21 gene changes hair lipid composition and increases cholesterol sulfate levels.

β-catenin, Shh, and Bmp signaling control hair follicle development.

Minoxidil absorption in skin is slowed by cleansing, depends on how long it stays on the skin, and is not much affected by reapplication.

Cold air and a chilled sapphire window both protect the skin during laser treatments, and work better with water or gel, especially for darker skin.

Water near Abakaliki mines has high toxic metal levels, posing health risks.

Adding TPGS to minoxidil solutions can improve skin penetration and retention, especially in water and PEG 400-based solutions.

Dyeing hair can help target and destroy hair follicles selectively.

PEI diffuses into hair at a constant rate, and urea speeds up this process.

Mueller-Hinton Agar is better for testing antifungal susceptibility in Microsporum canis and Nannizzia gypsea.

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

The study found that the Marangoni effect causes the uneven wetting of surfactant-coated hair due to the surfactant moving into the water.

Stiffness gradients in alginate gels can guide cancer cell invasion and study cellular behaviors.

Nanoparticles effectively deliver water-insoluble drugs to hair follicles, stimulating hair growth without irritating the skin.

Eucalyptol and oleic acid in nanoemulsions improve minoxidil delivery to hair follicles, potentially enhancing hair loss treatment.