什么是松萝酸？

Usnic acid is extracted from Usnea, Usnea, also known as old man's beard, which is not a plant but a lichen—a symbiotic relationship between an algae and a fungus.松萝酸是从松萝（Usnea）中提取的，也就是老人的胡须，它不是植物，而是地衣-藻类和真菌之间的共生关系。 Usnic Acid is used in powders and ointments for the treatment of infections of the skin.松萝酸用于粉剂和软膏中，以治疗皮肤感染。 In cosmetic products, usnic acid is used as a preservative because it is demonstrated to have antioxidant , anti-inflammatory, antimicrobial, and cytotoxic properties in vitro.在化妆品中，松萝酸被用作防腐剂，因为它在体外具有抗氧化，抗炎，抗微生物和细胞毒性的特性。 As a pure substance, in additon, usnic acid has been formulated in creams, toothpaste, mouthwash, deodorants and sunscreen products, and in some cases as an active principle.作为添加剂，松萝酸已作为纯物质配制在面霜，牙膏，漱口水，除臭剂和防晒产品中，在某些情况下是有效成分。 In recent years, usnic acid and its salt form, sodium usniate, have been marketed in the US as an ingredient in dietary supplement products, mostly with claims as weight-loss aides, though some as antimicrobial agents.近年来，松萝酸及其盐形式的松萝酸钠已在美国作为膳食补充产品的一种成分进行了市场销售，多数声称是减肥助手，尽管有些作为抗菌剂。