Natural - current in or made by mother nature; not synthetic or imitation; "a natural pearl"; "natural fuel"; "natural silk"; "natural blonde hair"; "a natural sweetener"; "natural fertilizers" synthetic, unreal - contrived by artwork in lieu of mother nature; "synthetic bouquets"; "artificial flavoring"; "an artificial diamond"; "artificial fibers"; "synthetic sweeteners" https://www.cureayu.com/products/no-stress