BUTYLENE GLYCOL

Butylene glycol is a diol that acts as a humectant and serves as a solvent. (1)

(1) Barel, A.O., Paye, M., & Maibach, H.I. (Eds.). (2010). Handbook of Cosmetic Science and Technology (3rd ed.). CRC Press. https://doi.org/10.1201/b15273