A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Locks in moisture
Traditional Use
A polypropylene glycol polymer developed in the cosmetics industry during the 1960s-1970s. Used as a humectant to improve water retention and product consistency in skincare formulations.