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Ethanol spreads well on hair at low humidity but less so at higher humidity due to water condensation.

This review highlights emerging evidence that biophysical and metabolic cues, such as oxygen levels and tissue mechanics, significantly influence skin stem cell behavior, which is crucial for developing advanced wound healing therapies beyond traditional infection and inflammation control.

In this study, researchers produced a biosurfactant from yeast that effectively reduces surface tension, acts as a good oil emulsifier, demonstrates antioxidant and antimicrobial properties, and exhibits no cytotoxicity, suggesting its potential use in eco-friendly cosmetic formulations.

This study concluded that sodium lauryl sulfate is very toxic to hair, damaging its structure, while natural conditioners help protect hair integrity and improve consistency and shine.

This study identified an optimal sulfate-free and silicone-free conditioning shampoo formulation using 1% hyaluronic acid at 800 kDa, 10% acidic sophorolipid, and 1% sodium chloride, which maintains essential conditioning and cleansing properties without compromising on performance.