The product is 100% natural and is made from the best herbs without dyes, additives and preservatives. Standardization: 20% dry herb/L of oil (i.e., 200 g herb per 1000 ml of oil). Absorption: Absorbs into skin at average speed, slight oil feeling left on skin. Shelf Life: Users can expect a shelf life of up to 2 years with proper storage conditions (cool, out of direct sunlight). Refrigeration after opening is recommended. Storage: It is recommended that cold-pressed carrier oils be kept in a cool dark place to maintain freshness and achieve maximum shelf life. If refrigerated, bring to room temperature before using.