Aluminum-zirconium antiperspirant salts with low M:CI ratio

Details Aluminum-zirconium antiperspirant salts with low M:CI ratio Aluminum-zirconium antiperspirant salts with low M:CI ratio

2006-01-31

2006-01-31

Dodson, Shelley A. (Department: 1616)

Drug, bio-affecting and body treating compositions

Anti-perspirants or perspiration deodorants

C424S066000, C424S068000, C424S400000, C424S401000, C424SDIG013

Reexamination Certificate

active

06991780

ABSTRACT:
Disclosed are enhanced efficacy aluminum-zirconium antiperspirant salt compositions that have a metal (Al+Zr) to chloride (or anion) ratio of about 0.90 to about 1.00. These salts also typically exhibit an HPLC peak 5 area content of about 33% or more, preferably at least 45%, more preferably at least 50%, most preferably at least 55%. Especially preferred are aluminum-zirconium antiperspirant salt compositions which, in addition to the aforementioned high peak 5 content, also exhibit an HPLC peak 4 to peak 3 area ratio of at least 0.4, preferably at least 0.7. Also disclosed are methods of making such antiperspirant salt compositions and aqueous solutions of such antiperspirant salt compositions. Further disclosed are topical compositions comprising a dermatologically acceptable carrier vehicle and a perspiration reducing effective amount of an aluminum-zirconium antiperspirant salt composition as described above.

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