ANTIPERSPIRANT COMPOSITIONS AND PRODUCTS HAVING COOLING SENSATION EFFECTS AND METHODS FOR MAKING THE SAME

1 . A personal care product comprising:

a container; and

an antiperspirant product housed within the container, the antiperspirant product comprising:

a first portion comprising a dispersed cooling sensation agent; and

a second portion that is in non-mutual spatial relationship with the first portion and has a composition different from the first portion, the second portion comprising a solubilizer effective to solubilize the dispersed cooling sensation agent within body generated moisture and thereby impart to a user a cooling sensation effect.

2 . The personal care product according to claim 1 , wherein the dispersed cooling sensation agent comprises menthol, vanillyl butyl ether, peppermint oil, methane carboxamide ethyl pyridine, menthoxypropanediol, menthanediol, cyanomethylphenyl methane carboxamide, camphor, ethyl menthane carboxamide, menthyl diisopropyl propionamide, menthyl lactate, 4-(butoxymenthyl)-2-methoxy-phenol, 3-[[5-methyl-2-(1-methyl)cyclohexyl]oxy]-1,2-propanediol, isopulegol, or a mixture thereof.

3 . The personal care product according to claim 1 , wherein the first portion comprises the dispersed cooling sensation agent in an amount of from about 0.50 to about 3.0 wt. %.

4 . The personal care product according to claim 1 , wherein the solubilizer comprises polyglycol, polyethylene glycol, polypropylene glycol, or a mixture thereof.

5 . The personal care product according to claim 1 , wherein the second portion comprises the solubilizer in an amount of from about 0.7 to about 8.5 wt. %.

6 . The personal care product according to claim 1 , wherein the dispersed cooling sensation agent is adsorbed to surfaces of a first plurality of silica particles that are dispersed throughout the first portion.

7 . The personal care product according to claim 6 , wherein the first plurality of silica particles are porous hydrophilic silica particles, and the dispersed cooling sensation agent is one of adsorbed onto and absorbed into the porous hydrophilic silica particles.

8 . The personal care product according to claim 6 , wherein the first plurality of silica particles are effective to release the dispersed cooling sensation agent when contacted with the body generated moisture.

9 . The personal care product according to claim 6 , wherein the first portion comprises the first plurality of silica particles in an amount of from about 1.0 to about 4.0 wt. %.

10 . The personal care product according to claim 1 , wherein the solubilizer is adsorbed to surfaces of a second plurality of silica particles that are dispersed throughout the second portion.

11 . The personal care product according to claim 10 , wherein the second plurality of silica particles are porous hydrophilic particles, and the solubilizer is one of adsorbed onto and absorbed into the porous hydrophilic silica particles.

12 . The personal care product according to claim 10 , wherein the second plurality of silica particles are effective to release the solubilizer when contacted with the body generated moisture.

13 . The personal care product according to claim 10 , wherein the second portion comprises the second plurality of silica particles in an amount of from about 0.5 to about 3.0 wt. %.

14 . The personal care product according to claim 1 , wherein the first portion comprises a first region and a second region and the second portion is positioned between the first region and the second region.

15 . An antiperspirant product comprising:

a first portion comprising a dispersed cooling sensation agent adsorbed on surfaces and absorbed into pores of a first plurality of silica particles that are dispersed throughout the first portion;

a second portion that is in non-mutual spatial relationship with the first portion and has a composition different from the first portion, the second portion comprising a solubilizer adsorbed on surfaces and absorbed into pores of a second plurality of silica particles that are dispersed throughout the second portion, the solubilizer effective to solubilize the dispersed cooling sensation agent within body generated moisture and thereby impart to a user a cooling sensation effect; and

wherein the first and second plurality of silica particles are effective to release the dispersed cooling sensation agent and the solubilizer when contacted with the body generated moisture.

16 . The antiperspirant product according to claim 15 , wherein the dispersed cooling sensation agent comprises menthol, vanillyl butyl ether, peppermint oil, methane carboxamide ethyl pyridine, menthoxypropanediol, menthanediol, cyanomethylphenyl methane carboxamide, camphor, ethyl menthane carboxamide, menthyl diisopropyl propionamide, menthyl lactate, 4-(butoxymenthyl)-2-methoxy-phenol, 3-[[5-methyl-2-(1-methyl)cyclohexyl]oxy]-1,2-propanediol, isopulegol, or a mixture thereof, and the solubilizer comprises polyglycol, polyethylene glycol, polypropylene glycol, or a mixture thereof.

17 . The antiperspirant product according to claim 15 , wherein the first portion comprises the dispersed cooling sensation agent in an amount of from about 0.50 to about 3.0 wt. %, and the second portion comprises the solubilizer in an amount of from about 0.7 to about 8.5 wt. %.

18 . The antiperspirant product according to claim 15 , wherein one of first and second portions contains an amount of unbound cooling sensation agent or unbound solubilizer that are not captured on either one of the first and second plurality of silica particles.

19 . A method for manufacturing an antiperspirant product, the method comprising the steps of:

depositing a first portion of the antiperspirant product into a mold and allowing the first portion to at least partially solidify, the first portion comprising a dispersed cooling sensation agent; and

depositing a second portion of the antiperspirant product into the mold and allowing the second portion to at least partially solidify, the second portion having a composition different from the first portion and comprising a solubilizer effective to solubilize the dispersed cooling sensation agent within body generated moisture and thereby impart to a user a cooling sensation effect.

20 . The method according to claim 19 , further comprising forming the first portion including:

mixing a cooling sensation agent and a first plurality of silica particles together to form a cooling sensation agent premix;

mixing antiperspirant ingredients together to form an antiperspirant premix; and

mixing the cooling sensation agent premix and the antiperspirant premix together to form the first portion.

21 . The method according to claim 20 , wherein the step of mixing the cooling sensation agent premix and the antiperspirant premix together includes forming the first portion comprising the dispersed cooling sensation agent in an amount of from about 0.50 to about 3.0 wt. % and the first plurality of silica particles in an amount of from about 1.0 to about 4.0 wt. %.

22 . The method according to claim 19 , further comprising forming the second portion including:

mixing the solubilizer and a second plurality of silica particles together to form a solubilizer agent premix;

mixing antiperspirant ingredients together to form an antiperspirant premix; and

mixing the solubilizer agent premix and the antiperspirant premix together to form the second portion.

23 . The method according to claim 22 , wherein the step of mixing the solubilizer agent premix and the antiperspirant premix together includes forming the second portion comprising the solubilizer in an amount of from about 0.7 to about 8.5 wt. % and the second plurality of silica particles in an amount of from about 0.5 to about 3.0 wt. %.

24 . The method according to claim 19 , wherein the step of depositing a first portion comprises depositing a first portion comprising a dispersed cooling sensation agent selected from the group consisting of menthol, vanillyl butyl ether, peppermint oil, methane carboxamide ethyl pyridine, menthoxypropanediol, menthanediol, cyanomethylphenyl methane carboxamide, camphor, ethyl menthane carboxamide, menthyl diisopropyl propionamide, menthyl lactate, 4-(butoxymenthyl)-2-methoxy-phenol, 3-[[5-methyl-2-(1-methyl)cyclohexyl]oxy]-1,2-propanediol, isopulegol, and mixtures thereof, and wherein the step of depositing a second portion comprises depositing a second portion comprising the solubilizer selected from the group consisting of polyglycol, polyethylene glycol, polypropylene glycol, and mixtures thereof.

25 . The method according to claim 19 , wherein the step of depositing the first portion of the antiperspirant product into the mold includes depositing the first portion into a container that will be used to store and dispense the antiperspirant product.