4-METHYL-1-OXASPIRO-4-UNDECANOL is graded A (Safe) by Expert·ING, based on COSING regulatory data.

4-METHYL-1-OXASPIRO-4-UNDECANOL

Safety grade: A

This is a synthetic fragrance molecule used to add or enhance scent in cosmetic and personal care products. It has a musky, floral, or woody aroma character that contributes to a product's overall fragrance profile.

It is used as a perfuming agent to impart a pleasant scent to cosmetic products such as lotions, creams, and hair care items.

Graded using: COSING.

Last verified: May 26, 2026