Fragrance compositions and use thereof for improving sleep

A method of improving at least one sleep parameter of a subject, wherein the method comprises:

• providing a fragrance accord;
• and
• administering the fragrance accord to the subject in an amount effective to improve the at least one sleep parameter;
• wherein the fragrance accord comprises:
• i) beta-ionone in an amount of from about 15% to about 30% by weight,
• ii) at least one floral compound in an amount of from about 10% to about 60% by weight, and
• iii) one musk compound, wherein the musk compound is selected from the group consisting of (3aR,5aS,9aS,9bR)-3a,6,6,9a-tetramethyl-2,4,5,5a, 7,8,9,9b-octahydro-1H-benzo[e][1]benzofuran, 5-cyclohexadecen-1-one, L-muscone, (12E)-1-oxacyclohexadec-12-en-2-one, and 1,4-dioxacycloheptadecane-5,17-dione;
• and
• wherein the at least one sleep parameter is selected from the group consisting of a decrease in number of total minutes awake, an increase in total minutes asleep, an increase in sleep efficiency, an increase in the number of REM sleep minutes, an increase in the number of light sleep minutes, and an increase in the number of deep sleep minutes.