Prairie Naturals OptiMSM® Skin Cream with an organic sulfur compound is an excellent beauty nutrient for the skin. This concentrated methylsulfonylmethane (MSM) cream helps to form the protein collagen that keeps skin elastic and supple. Not heavy or greasy, Prairie Naturals OptiMSM® Skin Cream effectively moisturizes while enhancing skin quality and resilience. Be a more beautiful you. OptiMSM® is the worlds purest methylsulfonylmethane (MSM). OptiMSM® is manufactured in the United States in a GMP-FDA approved facility and is the only MSM supported by double-blind clinical research. Every batch of OptiMSM® is distilled FOUR TIMES for purity and undergoes the most rigorous analytical testing available, guaranteeing unsurpassed quality. MSM is an organic sulfur-containing nutrient that supports healthy active lifestyles by providing nutritionally essential sulfur and methyl groups. OptiMSM® is the only brand of MSM with published, peer-reviewed safety data.