Fragrance compositions

A composition comprising:

• (a) a fragrance oil wherein the fragrance oil comprises:
• (i) one or more perfume raw materials with a high odour impact which have an odour detection threshold of less than, or equal to about 50 parts per billion
• (ii) less than about 4%, by weight of the fragrance oil, of top note perfume raw materials where in the top note perfume raw materials have a boiling point of less than 250° C. at 1 atmosphere pressure
• (b) an entrapment material which is not pre-associated with the fragrance oil prior to inclusion into the composition and which is selected from the group consisting of polymers;
• capsules, microcapsules, and nanocapsules;
• liposomes;
• film formers;
• absorbents;
• cyclic oligosaccharides and mixtures thereof;
• and
• (c) from about 5% to about 20% water, by weight of the composition;
• wherein the perfume raw material and the entrapment material exist in an associated form on the substrate, wherein the weight ratio of high odour impact perfume raw materials which have an odor detection threshold of less than, or equal to, about 50 parts per billion to entrapment material within the associated form falls in the range of about 1:20 to about 20:1 and wherein the high odour impact raw material, or mixture of raw materials, remain detectable on the substrate for greater than about 2 hours, preferably greater than about 4 hours, more preferably greater than about 6 hours after the composition has been applied to the substrate.

A method for fragrancing a substrate, the method comprising the step of applying a composition to the substrate, the composition comprising:

• (a) a fragrance oil wherein the fragrance oil comprises:
• (i) one or more perfume raw materials with a high odour impact which have an odor detection threshold of less than, or equal to about 50 parts per billion
• (ii) less than about 4%, by weight of the fragrance oil, of top note perfume raw materials where in the top note perfume raw materials have a boiling point of less than 250° C. at 1 atmosphere pressure;
• (b) an entrapment material which is not pre-associated with the fragrance oil prior to inclusion into the composition and which is selected from the group consisting of polymers;
• capsules, microcapsules, and nanocapsules;
• liposomes;
• film formers;
• absorbents;
• cyclic oligosaccharides and mixtures thereof;
• and
• (c) greater than about 50%, by weight, of a volatile solvent;
• wherein the perfume raw material and the entrapment material exist in an associated form on the substrate and wherein the weight ratio of high odour impact perfume raw materials which have an odour detection threshold of less than, or equal to, about 50 parts per billion to entrapment material within the associated form falls in the range of about 1:20 to about 20:1;
• whereupon after application to the substrate, at least some of the fragrance oil and the entrapment material form a reversible physical or chemical association.