Explained We don't have a description for Dimethyloctahydro-2-Naphthaldehyde. Dimethyloctahydro-2-Naphthaldehyde is a rare cosmetic ingredient, with about 0.0% of the products in our database containing it. What it does: Masking, Tonic CosIng Data CosIng ID: 75898INCI Name: DIMETHYLOCTAHYDRO-2-NAPHTHALDEHYDEEC #: Â 272-119-8All Functions: Masking, Tonic