Used primarily as a skin penetration enhancer in transdermal drug delivery systems. It improves the absorption of active pharmaceutical ingredients through the skin by temporarily modifying the structure of the stratum corneum. Commonly found in topical formulations such as gels, creams, and patches for drugs treating pain, inflammation, and hormone-related conditions. Also utilized in cosmetic products to boost the delivery of active ingredients like anti-aging compounds and moisturizers. Its low irritation potential and high efficacy make it suitable for use in sensitive dermal applications.