2025 Volume 59 Issue 4 Pages 177-183
In cosmetics, the important thing is to maintain healthy skin and enjoy a comfortable life both physically and mentally. One example of healthy skin is “soft skin” that is less prone to wrinkles. Key ingredients for maintaining skin softness are moisturizers and oils, and self-organizing structures (α-gel) formed by emulsification technology using surfactants and higher alcohols have long been utilized for stable formulation. To make the skin softness pronounced enough to potentially improve wrinkles, it is necessary to include moisturizers and emollient oils in much higher concentrations than in conventional formulations. However, there is a trade-off, as this significantly reduces the product's usability and emulsification stability. This article introduces the characteristics of α-gel, which forms the backbone of emulsification, and discusses the features of a newly developed α-gel inspired by the structure of intercellular lipids in the stratum corneum, along with its formulation applications, based on research findings.