Astragalus seed extract solution and its use for treating skin disorders and conditions

Abstract

An aqueous Astragalus seed extract solution prepared by a method including soaking dried seeds of Astragalus seed in an aqueous solvent to form a suspension, boiling the suspension for at least 30 minutes, and filtering the suspension so as to obtain the Astragalus seed aqueous extract solution, the weight ratio of the dried seeds of Astragalus seed to the extract solution being 1:100 to 75:100.

What is claimed is: 
     
         1 . An aqueous  Astragalus  seed extract solution prepared by a method comprising:
 soaking dried seeds of  Astragalus  seed in an aqueous solvent to form a suspension,   boiling the suspension for at least 30 minutes, and   filtering the suspension so as to obtain the  Astragalus  seed aqueous extract solution, wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 1:100 to 75:100.   
     
     
         2 . The extract solution of  claim 1 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 8:100 to 50:100. 
     
     
         3 . The extract solution of  claim 2 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 10:100 to 25:100. 
     
     
         4 . The extract solution of  claim 1 , wherein the method further comprises, after the filtering step, adjusting the weight ratio by boiling the extract solution to decrease its volume or by adding to the extract solution a solvent to increase its volume. 
     
     
         5 . The extract solution of  claim 4 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 10:100 to 25:100. 
     
     
         6 . A skin care composition, comprising the aqueous  Astragalus  seed extract solution of  claim 1  and a non-aqueous skin acceptable carrier, wherein the extract solution is 0.01-75% by weight. 
     
     
         7 . The skin care composition of  claim 6 , wherein the extract solution is 0.5-50% by weight. 
     
     
         8 . The skin care composition of  claim 7 , wherein the extract solution is 10-25% by weight. 
     
     
         9 . The skin care composition of  claim 8 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 10:100 to 25:100. 
     
     
         10 . The skin care composition of  claim 6 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 10:100 to 25:100. 
     
     
         11 . A skin care method, comprising applying topically an effective amount of the aqueous  Astragalus  seed extract solution of  claim 1  to a skin area in need of reducing or slowing a skin disorder. 
     
     
         12 . The skin care method of  claim 11 , wherein the skin disorder is selected from the group consisting of acne, acne marks, scars, rosacea, irritated skin, dark spots, enlarged skin pores, and blemishes. 
     
     
         13 . The skin care method of  claim 12 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 8:100 to 50:100. 
     
     
         14 . The skin care method of  claim 13 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 10:100 to 25:100. 
     
     
         15 . The skin care method of  claim 12 , wherein the skin disorder is selected from the group consisting of acne, acne marks, and dark spots. 
     
     
         16 . A skin care method, comprising applying topically an effective amount of the aqueous  Astragalus  seed extract solution of  claim 1  to a skin area in need of reducing or slowing a skin condition. 
     
     
         17 . The skin care method of  claim 16 , wherein the skin condition is selected from the group consisting of wrinkles, loose skin, sagging, uneven skin tone, dull complexion, and age spots. 
     
     
         18 . The skin care method of  claim 17 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 8:100 to 50:100. 
     
     
         19 . The skin care method of  claim 18 , wherein the weight ratio of the dried seeds of  Astragalus  seed to the extract solution is 10:100 to 25:100. 
     
     
         20 . The skin care method of  claim 17 , wherein the skin condition is selected from the group consisting of uneven skin tone, dull complexion, and age spots.