Non-tacky and quick-drying aqueous-based antiperspirant compositions

Abstract

The invention provides fully aqueous-based antiperspirant compositions for application onto the skin for reducing or inhibiting body malodor and perspiration. The compositions contain blocked polyglycols which function as detackifiers and / or emollients, and which provide a completely soluble environment for the antiperspirant active ingredient. The compositions of the invention are stable, are easily and inexpensively prepared and manufactured, and provide versatile formulations which may be delivered and applied to the skin by a variety of means, including roll-ons, aerosols, and the like. Without the need for emulsions or stringent alcohol additives, the aqueous-based antiperspirant solution technology of the invention provides compositions that are clear, non-tacky, quick drying, and leave little to no visible residue or film on the skin following application.

Description

field of invention [0001] The present invention relates generally to antiperspirants and deodorants which reduce and prevent perspiration and body odor associated with perspiration, especially underarm odor, without the adverse effects of stickiness or moisture after application. Background of the invention [0002] Antiperspirants prevent underarm odor by inhibiting perspiration through the action of astringent salts such as aluminum and zirconium salts. As most antiperspirant users have experienced, these active salts can be irritating and painful to sensitive skin or surfaces when the antiperspirant is applied. Deodorants, on the other hand, prevent bad odors from the breakdown of sweat, which is caused by chemicals and microorganisms acting on sweat to produce malodorous fatty acids. Deodorants do not suppress sweat, but they inhibit the growth of odor-causing microbes, so deodorants are generally less irritating to the skin than antiperspirants. However, antiperspiran...

AI Technical Summary

Problems solved by technology

Another problem in the art is the stinging sensation after application of antiperspirant compositions to the skin, especially after shaving, especially compositions with a significantly high content of ethanol

However, the acetal gelling agent is unstable in the acidic environment of most antiperspirant active materials, so it is necessary to develop a suitable buffer or stabilizer to reduce the impact of acid on the gelling agent

Additionally, most clear or translucent antiperspirant gel sticks that contain an acetal gelling agent and a solubilized active antiperspirant material are inherently unfavorably sticky

Acid hydrolysis of commonly used gelling agents is much faster in aqueous solution, which further complicates the problem, so anhydrous compositions have to be used in the art

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