Beta-carotene is a known antioxidant, and antioxidants are substances that may protect your cells from free radicals, which may play a role in heart disease, cancer and other diseases. beta-carotene is a coloring agent used in margarine, cheese and pudding to produce the desired color, and is also used as an additive to yellow-orange color. beta-carotene is also a precursor to carotenoids and vitamin A It is beneficial in protecting the skin from dryness and peeling. It also slows cognitive decline and is beneficial to human health.