Depending on what function the sheet masks want to perform, the serum contains various ingredients that are commonly used, such as aloe vera and vitamin c, to more unusual ones such as pearl, snail extract and seaweed.
Also, for prevention against bacteria/fungi contamination, most sheet masks contain chemical preservatives such as parabens and recently phenoxyethanol, which are not good for the skin. However, Orgaid sheet masks include fermentation of Lactobacillus which can perform as a natural preservative, and the system was proven for its safety by Ecocert