Slimming cosmetic active ingredient (I) comprises at least a mixture of a product obtained from Coriandrum sativumfruit and a product derived from fruit of Citrus aurantium dulcis. Independent claims are included for: (1) a preparation of (I) comprising: obtaining a product obtained from Coriandrum sativumfruit, by solubilizing Coriandrum sativumfruit in water, followed by enzymatic hydrolysis； obtaining a product obtained from Citrus aurantium dulcisfruit, by solubilizing Citrus aurantium dulcisfruit in solvent containing water and butylene glycol； and mixing the product from Coriandrum sativumand the product from Citrus aurantium dulcis； (2) #a cosmetic composition comprising (I) (0.01-20 wt.%)； and (3) #a cosmetic process for care of human skin, treating cellulite and/or appearance of orangey skin, comprising topical application of the composition containing (I) to the skin. ACTIVITY : Antiinflammatory； Antibacterial； Antilipemic. MECHANISM OF ACTION : Fatty acid transport protein 4 (FATP-4) synthesis inhibitor； Caveolin-1 synthesis inhibitor. The ability of (I) to inhibit the caveolin-1 synthesis was tested in human adipocytes by Western blotting. The results showed that the inhibition of adipocyte synthesis of caveolin-1 by (I) was 38%.
