Dunaliella salina is a microalgae with a high concentration of beta-carotene and other carotenoids. People take it as a supplement for antioxidant support and to promote healthy immune function and skin maintenance.
Take it in oil or capsule form, with a meal that provides some fat. Fat aids absorption of these fat-soluble carotenoids. Many people include it in a daily wellness routine.
Doses differ between products, so follow the label. Large amounts can turn your skin a harmless yellowish color, a condition called carotenodermia. If you are pregnant, nursing, or taking medication that affects vitamin A metabolism, check with a healthcare professional before using.