The invention relates to the use of neopentyl glycol diisononanoate (CAS No. 27841-07-2) as a fixative for perfume oils or as a fixative for (top note) fragrance substances. The invention also relates to certain compositions containing neopentyl glycol diisononanoate and one or more top note fragrance substances. Furthermore, the invention relates to a method for producing such compositions and (cosmetic) products containing a composition according to the invention. Additionally the invention relates to a method for imparting, intensifying or modifying an odor on the (human) skin. A particular aspect of the present invention relates to the improved adherence of volatile fragrance substances to (human) skin and/or (human) hair. Apart from this the invention relates to a combination (kit) comprising neopentyl glycol diisononanoate and one or more top note fragrance substances.