The Alto Defense Serum by Skinbetter Science Canada is a skincare product that claims to provide antioxidant protection to the skin. It is designed to help reduce the appearance of fine lines and wrinkles, brighten the complexion, and improve overall skin health. The serum is dermatologist-tested and clinically proven. However, it does not specify whether it is fragrance-free, cruelty-free, or made with natural ingredients. Discontinued