2,3-Butanediol is a diol with moisturizing and stabilizing properties. In skin care, it is used as a versatile excipient—among other things, to bind moisture, improve texture, and act as a dispersant for poorly soluble active ingredients.(1)
(1) Bährle-Rapp, M. (2012). Springer Encyclopedia of Cosmetics and Personal Care. 4th revised and expanded edition. Springer.
(2) Manufacturer's specifications.
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