Relaxory 6 in 1 Floral 10ml Fragrance Essential Oil Gift Set. What is fragrance oil? Fragrance oil is used to make a number of cosmetic products, like cologne, perfume, soaps, candles, lotions, etc. Perfume and Cologne are made by adding fragrance oil to alcohol. The mixture is 10% oil and 90% alcohol. Cologne and perfume sprays only last for a short time. This is because the alcohol speeds up the evaporation process. This is why perfume and cologne is so strong when first sprayed and then dissipates so quickly. These fragrance oils contain absolutely no alcohol. Because oil takes much longer to evaporate these cologne and perfume oils give off a consistent aroma that lasts. How to use? Fragrance oils have multiple uses. Try adding a few drops to some burning candle wax, oil burner, aroma diffuser, bath water, ceiling fan, simmering water on the stove, lotion, soap, hair brush, or some cotton balls. You can place the cotton balls in your dresser, put them in a open container and place them in your bathroom, bedroom, closet, anywhere. Pure fragrance oils will out last any air freshener bought at the retail store. Inside the Package: Gift Set Included 6 x 10ml: Lavender, Rose, LiLac, Jasmine, SunFlower and Violet.