At present, hyaluronic acid has been widely used in clinical medicine, cosmetology, etc., but everyone is still relatively unfamiliar with its application in the field of food. In fact, health foods or foods containing sodium hyaluronate are very common abroad, such as Japan, South Korea, the United States, the European Union, Australia, New Zealand and Brazil, etc. have allowed sodium hyaluronate and its main ingredients to be added to food. or dietary supplements.

In this paper, the repairing effects of HA on various skin damage caused by UV were reviewed from the aspects of scavenging free radicals, anti-inflammatory, anti-lipid oxidation, and anti-apoptosis. As the research on the performance of HA in after-sun repair continues to deepen, it will have higher application value and better development prospects in skin care products.