Patent ID: 7157077

Claim:
An antiperspirant composition comprising, in percent by weight, about 5% to about 82% (USP) of an enhanced efficacy aluminum-zirconium salt that is a mixture or complex of an aluminum salt of the formula Al 2 (OH) 6-a X a wherein X is Cl, Br, I or NO 3 , and a is about 0.3 to about 5 with a zirconium salt of the formula ZrO(OH) 2-pb Y b wherein Y is Cl, Br, I, NO 3 , or SO 4 , b is about 0.8 to 2, and p is the valence of Y, wherein said aluminum-zirconium salt has an HPLC peak 4 to peak 3 area ratio of at least 0.5 with at least 70% of the aluminum contained in said peaks 3 and 4, about 1% to about 85% water, a water soluble amino acid in an amount to provide an amino acid:Al+Zr weight ratio of about 2:1 to about 1:20, wherein the amino acid is an amino-substituted lower alkanoic acid, and a soluble strontium salt in an amount to provide a Sr:Al+Zr weight ratio of about 1:1 to about 1:28.