Anti-microbial antiperspirant products

Abstract

Anti-microbial products comprising an antiperspirant active and an amount of transition metal chelator sufficient to enhance the deodorancy performance of said antiperspirant active, are claimed. The transition metal chelator salt improves the anti-microbial performance of the antiperspirant active and the two components can be co-formulated. Particular products are antiperspirant deodorant compositions. Preferred chelator salts have high affinity for iron (III).

1 . An antimicrobial-product comprising an antiperspirant active and a transition metal chelator that is a micro-molar active anti-microbial agent, wherein the ratio of the transition metal chelator to the anti-perspirant active is from 1:3 to 1:50 by weight.  
     
     
         2 . (canceled)  
     
     
         3 . An anti-microbial product according to  claim 1  wherein the ratio of the transition metal chelator to the antiperspirant active is from 1:5 to 1:25 by weight.  
     
     
         4 . An anti-microbial product according to  claim 1 , comprising a liquid or soft solid composition.  
     
     
         5 . An antimicrobial product according to  claim 4 , having a hardness such that the pressure required to penetrate the composition is less than 0.06 N.mm −2 .  
     
     
         6 . An anti-microbial product according to  claim 1 , comprising an aerosol composition.  
     
     
         7 . An anti-microbial product according to  claim 1 , wherein the antiperspirant active is an aluminium, zirconium, or mixed aluminium/zirconium salt.  
     
     
         8 . An anti-microbial product according to  claim 6 , wherein an aluminium halohydrate is a component of the aerosol composition.  
     
     
         9 . (canceled)  
     
     
         10 . (canceled)  
     
     
         11 . (canceled)  
     
     
         12 . An anti-microbial product according to  claim 1 , wherein the transition metal chelator has an acid form comprising at least five acid groups.  
     
     
         13 . An anti-microbial product according to  claim 1 , wherein the transition metal chelator is a polyaminocarboxylic acid or salt thereof.  
     
     
         14 . An anti-microbial product according to  claim 13 , wherein the transition metal chelator is diethylenetriaminepentaacetic acid or a salt thereof.  
     
     
         15 . An anti-microbial product according to  claim 1 , comprising an additional organic anti-microbial agent.  
     
     
         16 . An anti-microbial product according to  claim 15 , comprising a polyhexamethylene biguanide salt, triclosan, or farnesol.  
     
     
         17 . An anti-microbial product according to  claim 1 , comprising fragrance material at up to 4% by weight of the composition.  
     
     
         18 . (canceled)  
     
     
         19 . A cosmetic method of reducing perspiration and providing additional control of bacterial numbers on a human body surface, said method comprising the topical application to the human body of a product according to  claim 1 .  
     
     
         20 . A cosmetic method according to  claim 19 , resulting in reduced body odour.  
     
     
         21 . (canceled)  
     
     
         22 . A method for the manufacture of an anti-microbial composition comprising the mixing of an antiperspirant active, a transition metal chelator, and a carrier fluid, wherein the transition metal chelator comprises a chelator capable of reducing the growth of  Staphylococcus epidermidis  by at least 30%, pursuant to the procedure set forth in the instant specification under the heading “Anti-microbial Performance of Chelators”.  
     
     
         23 . An anti-microbial product according to  claim 1  wherein the transition metal chelator comprises ethylenebis[2-(2-hydroxyphenyl)glycine] (EDDHA) or a salt thereof.  
     
     
         24 . An anti-microbial product according to  claim 21  wherein the transition metal chelator comprises a chelator with phosphonic acid groups, or a salt thereof.  
     
     
         25 . An anti-microbial product comprising (a) an antiperspirant active, (b) a transition metal chelator having a binding coefficient for iron (III) of greater than 10 10 , and (c) an additional anti-microbial agent comprising polyhexamethylene biguanide salt, triclosan, or farnesol.  
     
     
         26 . An anti-microbial product according to  claim 25  wherein the transition metal chelator has a binding coefficient for iron (III) of greater than 10 26 .  
     
     
         27 . An anti-microbial product according to  claim 1  wherein the transition metal chelator comprises a chelator capable of reducing the growth of  Staphylococcus epidermidis  by at least 30%, pursuant to the procedure set forth in the instant specification under the heading “Anti-microbial Performance of Chelators”.