Used as an emulsifying and solubilizing agent in topical and transdermal formulations. Enhances skin penetration of active ingredients, making it valuable in pharmaceutical and cosmetic products. Commonly found in creams, gels, and lotions where improved delivery of poorly water-soluble compounds is required. Also helps stabilize formulations by maintaining uniform dispersion of ingredients. Suitable for use in products designed for localized or systemic delivery through the skin.