丙二醇二壬酸酯为柔润剂、增稠剂、黏度控制剂。该成分有致粉刺和致痘的可能性。该成分的致痘风险等级参考自Fulton， J. E. Comedogenicity and irritancy of commonly used ingredients in skin care products. J Soc Cosmet Chem 43， 321 - 333 (1989).