Decleor was founded in 1974. Even before the advance of essential oils (also called essential oils). For 40 years, Decleor has been refining its expertise to create products and services that are essential for success with its customers. What are the essential oils proposed by Decléor? They are the purest part of a plant, with powerful properties. The brand's credo is to create extra potent and concentrated formulas with the best natural ingredients. This is to counteract the influences of daily life on the skin.