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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.

Chemical treatments weaken hair's thermal stability and structure.

A new fluorescent material can detect dextran sulfate sodium, turning green when present, useful for forensic and environmental monitoring.

Human hair has bipolar electrical charges because of a gap in the hair follicle's electromagnetic field.

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

Different treatments change the strength and flexibility of human hair.

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

Hair properties vary by ethnicity and environment, affecting surface charge and particle deposition.

The observed "toughening" in keratin was actually due to water evaporation, not a real change in keratin.

Chemical modifications can alter hair's stability and flexibility, with hydrophobic interactions helping maintain structure in humid conditions.

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

Chemical treatments damage hair more than UV exposure, making it thinner and less flexible.

Hydrogel surface properties affect mouse embryoid body differentiation.

Conductive hydrogels show promise for medical uses like healing wounds and tissue regeneration but need improvements in safety and stability.

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

Hydrophobic modifications make human hair less affected by water.

A new cooling device keeps a constant temperature for medical procedures, improving results.

Hair follicles significantly enhance electroosmotic transport during iontophoresis.

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

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

Male mice have thicker skin, causing more light scattering than females.

The neem oil emulgel effectively treats dandruff and is easy to use on the scalp.

Treatments with certain oils and resins make hair shinier, while zinc oxide and synthetic sebum make it duller.

BECD helps straighten wavy hair by reducing undulation.

Steroid hormones change the size, charge, and stability of DPPC liposomes.

Diclofenac salt delivery through skin varies based on the salt's counterions.

Dyclonine can effectively reduce skin issues by inhibiting the TRPV3 channel.

A certain surfactant sticks to human hair, making it change from water-repelling to water-attracting, which could help in hair conditioning.