They may be an end-product of special processing treatments or unique raw materials. They are usually supplied by a single company under a trade name. A reasonable length of time for a fragrance to remain stable before the product is affected by certain raw materials, heat, light and air. The relative intensity of a fragrance impression. May be derived or isolated from natural products or manufactured in the laboratory.
Some synthetics are superior to the natural in uniformity, stability and availability.
Synthetics may be as costly as naturals. The ability of a perfume to last, or a fragrance note to retain its characteristic odor. The subtle characteristics of the fragrance background. A soft, smooth, mellow fragrance without harsh chemical notes. An odor which is linked to the aroma of freshly cut, dry wood or fibrous root such as sandalwood or vetiver.