OCTAHYDRO-8,8-DIMETHYL-2-NAPHTHALDEHYDE.

This ingredient functions as a fragrance component and is not associated with the 'dusting' phenomenon, which is typically relevant to the concentration and efficacy of active ingredients.

Safety evaluations by the Research Institute for Fragrance Materials (RIFM), including a peer-reviewed assessment, confirm that this ingredient is neither genotoxic nor phototoxic/photoallergenic. However, it presents a potential for skin sensitization in a small proportion of individuals, which could manifest as temporary reactions like redness, bumps, or pruritus. A No Expected Sensitization Induction Level (NESIL) of 5000 μg/cm2 has been determined for the skin sensitization endpoint. Although negative in in vitro Direct Peptide Reactivity Assay (DPRA) and KeratinoSens, it tested positive in the human cell line activation test (h-CLAT). The International Fragrance Association (IFRA) establishes safe use standards based on RIFM's maximum acceptable concentration levels. It is recognized by the EPA Substance Registry Services (TSCA) and FDA Global Substance Registration System (GSRS).