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3,4-DIHYDRO-7-METHYLNAPHTHALENONE

Description

3,4-Dihydro-7-methylnaphthalenone is a synthetic aromatic compound used in haircare formulations, primarily as a fragrance ingredient. This colorless to pale yellow liquid possesses a distinct woody, amber-like scent with subtle floral undertones. Its chemical structure consists of a naphthalene ring with a methyl group and a ketone functionality, contributing to its unique olfactory profile.

In haircare products, 3,4-dihydro-7-methylnaphthalenone serves as a fixative, enhancing the longevity of other fragrance components. It is particularly effective in shampoos, conditioners, and leave-in treatments, where its low volatility helps maintain a pleasant scent throughout the day. The compound also exhibits mild antimicrobial properties, potentially contributing to product preservation.

Formulators typically incorporate this ingredient at concentrations ranging from 0.01% to 0.1%, depending on the desired fragrance intensity and product type. While generally well-tolerated, patch testing is recommended for individuals with sensitive skin or fragrance allergies. 3,4-Dihydro-7-methylnaphthalenone complies with IFRA (International Fragrance Association) standards and is approved for use in cosmetic products within specified limits.