These are cosmetic fragrance oils and are highly concentrated. Add sparingly to achieve your desired scent. It is easier to add than take away. Suggested usage: 1-2%. As with all manufacturing we would recommend you test with a small quantity that the fragrance oil is suitable for your requirements. Differing results may be obtained, depending on your recipe. Fragrance oils are a mixture of synthetic and/or natural oils. They are manufactured and are suitable for soaps, bath bombs, bath salts, pot pourri, oil burners and joss sticks/incense. They are not suitable for lip balms where flavour oil must be used. All fragrance oils are manufactured in the United Kingdom and conform to current IFRA guidelines and none of the fragrances are tested on animals.