Acidic composition for external use, and agent for accelerating penetration into skin or the like of cosmetic preparation, hair-growing agent and preparation for external use each containing the composition

Abstract

An acidic composition for external use which contains an acidic poly saccharide and water as essential ingredients, and an agent for accelerating the penetration into skin or the like of a cosmetic preparation, hair-growing agent or preparation for external use, each containing the composition. The composition is easy to manufacture, and shows a stronger cosmetic or therapeutic effects than conventional compositions.

1 . A method for accelerating the penetration or absorption of a composition into skin comprising the steps of: 
 forming a composition comprising 0.01 to 3 wt % of sodium alginate, sodium dihydrogenphosphate and water wherein the said composition is in the form of aqueous solution, gel, or cream and the pH, thereof is from 2.5 to 5.0, said sodium alginate, sodium dihydrogenphosphate, and water being present in amounts sufficient to moisturize and adjust the texture of the skin, increase the tension of the skin, whitening the skin, or increase the transparent impression of the skin and, applying said composition to the skin.    
     
     
         2 . A method for accelerating the penetration or absorption of a composition into hair comprising the steps of: 
 forming a composition comprising 0.01 to 3 wt % of sodium alginate, sodium dihydrogenphosphate and water wherein the said composition is in the form of aqueous solution, gel, or cream and the pH, thereof is from 2.5 to 5.0, said sodium alginate, sodium dihydrogenphosphate, and water being present in amounts sufficient to make hair smooth and supple, and applying said composition to hair.    
     
     
         3 . A method according to  claim 1 , wherein the said water is acidic electrolized water.  
     
     
         4 . A method according to  claim 1 , wherein the said composition is devoid of a cosmetic or medicinal ingredient.  
     
     
         5 . A method for increasing the transdermal absorption rate of a physiologically active substance or the like comprising the steps of: 
 forming a preparation by mixing a composition which penetrates into the skin or the like quickly and sufficiently, said composition comprising 0.01 to 3 wt % of sodium alginate, sodium dihydrogenphosphate and water wherein the said composition is in the form of aqueous solution, gel or cream and the pH thereof is from 2.5 to 5.0 said composition further containing a conventional cosmetic or medicinal composition or preparation for external use containing the said substance, said sodium alginate, sodium dihydrogenphosphate, and water being present in amounts sufficient to increase the transdermal absorption rate of a physiologically active substance into skin, and    applying the said manufactured preparation to the skirt or the like.