Oil or essence? Why not both? Huxley Secret of Sahara Oil Essence; Essence-Like, Oil-Like is an oil-like essence, created from the best of Sahara’s ecosystem. Cactus extracts are combined with yerba mate leaf, acai berry and camu-camu, all of which are rich in antioxidants and demonstrate revitalizing and repairing effect. This oil essence offers unparalleled hydration, at the same time strengthening and improving skin elasticity.