【Introduction】 Rosmarinic acid is considered to be a natural, efficient and stable (high temperature durable), security, non-toxic and side-effects, water-soluble antioxidants and a green food additive. In addition, it can stimulate and accelerate the metabolism of the fat by anti-oxidant activity. Not only can it lower the blood pressure, but it can also promote the lipid compounds to emit from the manure so as to lose weight.

【Introduction】 Oleuropein is a chemical compound found in olive leaf from the olive tree (and leaves of privet) together with  other closely related compounds such as 10-hydroxyoleuropein, ligstroside, and 10-hydroxyligstroside.  All these compounds are tyrosol esters of elenolic acid that are further hydroxylated and glycosylated.

【Introduction】Rhus chinensis, the Chinese sumac or nutgall tree, is a plant species in the genus Rhus. The species is used to produce galls, called Chinese gall, Galla Chinensis or Wu Bei Zi in Chinese, which are rich in gallotannins, a type of hydrolysable tannins. Chinese galls are used in Chinese medicine to treat coughs, diarrhea, night sweats, dysentery and to stop intestinal and uterine bleeding.

【Introduction】Centella asiatica has been used as a medicinal herb for thousands of years in India, China and Indonesia. Its ability to heal wounds, improve mental clarity, and treat skin conditions such as leprosy and psoriasis were important reasons for its extensive use in these countries. It has also been called one of the "miracle elixirs of life" because legend has it that an ancient Chinese herbalist lived for more than 200 years as a result of using the herb.

【Introduction】Aloe Vera is a succulent plant specieswhich is found only in cultivation, having no naturally occurring populations The species is frequently cited as being used in herbal medicine since the beginning of the first century AD. Extracts from A. vera are widely used in the cosmetics and alternative medicine industries, being marketed as variously having rejuvenating, healing, or soothing properties.