Mannatech, Inc. develops nutritional supplements, topical and skin care products, and weight-management products that target optimal health and wellness. Its three major categories of products include Health, Weight & Fitness, and Skin Care. The Health category products offer a variety of nutritional supplements that aid in optimizing overall health and wellness. The Weight & Fitness category offers products designed to curb appetite and burn fat, build lean muscle tissue, and support recovery from overexertion. The Skin Care category products offer several products that are formulated with botanical ingredients and are designed to give the skin a more natural youthful appearance by moisturizing, hydrating and reducing the appearance of fine lines and wrinkles. The company was founded by Marlin Ray Robbins and Samuel L. Caster in November 1993 and is headquartered in Coppell, TX.