Cosmetic composition having high dosage form stability

Abstract

The present invention relates to a cosmetic composition using a mannosylerythritol lipid, which is a kind of glycolipid, as a stabilizer in order to prevent kojyl methylenedioxycinnamate, which is an active ingredient having various skin effects such as antiaging, whitening and antioxidation, from causing crystallization inside a dosage form. Even if the cosmetic composition according to the present invention contains a high concentration of an active ingredient, crystal precipitation does not occur in various dosage forms, and thus the functionality of the active ingredient is maximized, skin delivery is increased and the texture during use is improved.

1 . A cosmetic composition comprising:
 kojyl methylenedioxycinnamate represented by Formula 1 as an active ingredient; and   a mannosylerythritol lipid (MEL) represented by Formula 2 as a stabilizer:   
       
         
           
           
               
               
           
         
         wherein R 1  and R 2  are the same or different from each other, and each independently a C2 to C24 aliphatic acyl group, and 
         R 3  and R 4  are the same or different from each other, and each independently an acetyl group or hydrogen. 
       
     
     
         2 . The cosmetic composition of  claim 1 , wherein R 1  and R 2  in Formula 2 are the same or different from each other, and each independently an aliphatic acyl group (3≤n≤15) represented by —C(═O) 13  (CH 2 ) n —CH 3 . 
     
     
         3 . The cosmetic composition of  claim 1 , wherein the mannosylerythritol lipid is represented by Formula 3: 
       
         
           
           
               
               
           
         
         wherein R 5  and R 6  are the same or different from each other, and are an acetyl group or hydrogen, and n or m is an integer ranging from 6 to 10. 
       
     
     
         4 . The cosmetic composition of  claim 1 , wherein the kojyl methylenedioxycinnamate is included at a content of 0.05 to 0.25% by weight, based on the total weight of the cosmetic composition. 
     
     
         5 . The cosmetic composition of  claim 1 , wherein the mannosylerythritol lipid is included at a content of 0.25 to 5.0% by weight, based on the total weight of the cosmetic composition. 
     
     
         6 . The cosmetic composition of  claim 1 , wherein the kojyl methylenedioxycinnamate and the mannosylerythritol lipid are included at a weight ratio of greater than 1:2.5 to 1:100.