Lotionized tissue products containing a pH balance compound for the skin

Abstract

A substrate treated with a lotion including a skin pH balancing compound and a base lotion. The pH balancing compound is preferably an organic acid, such as an alpha-hydroxy acid, an alpha-dihydroxy acid, or a beta-hydroxyacid, a combination of an organic acid and a salt of an organic acid, or a buffer combination, such as combinations of citric acid and disodium phosphate, or disodium citrate and sodium hydroxide. The preferred lotion has the effect of maintaining the skin acid mantle while making the treated substrate, preferably tissue, towel or napkin, optionally wet-strengthened, wipe or nonwoven material, feel smooth, lubricious and nongreasy. The skin care benefits of the lotionized substrate are expressed whether the product is used dry or prewetted with water.

1. A substrate treated with a lotion capable of maintaining skin pH balance, the lotion comprising a skin pH balancing compound in an amount effective for maintaining the acid mantle of skin and a non- greasy  base lotion comprising, by weight of the lotion composition, (a) at least about 5% of an aromatic ester emollient or a fatty alcohol ester of a non-fatty organic acid emollient or mixture thereof and (b) from about 25% to about 95% of a retention/release agent, wherein said substrate is chosen from a towel, a tissue, a web of cellulosic fibers, and a web of synthetic fibrous material, and wherein said base lotion is at least partially solid at about room temperature and at least partially liquid at about human skin temperature, and provides a non- greasy feeling layer on the skin.    
     
     
       2. A method of maintaining the acid mantle of skin comprising contacting the skin with a substrate, said substrate containing a lotion comprising a skin pH balancing compound in an amount effective for maintaining the acid mantle of skin and a non- greasy base lotion comprising, by weight of the lotion composition,  
 ( a )  at least about  5   %  of an aromatic ester emollient or a fatty alcohol ester of a non - fatty organic acid emollient or mixture thereof, and    
 ( b )  from about  25   %  to about  95   %  of a retention/release agent,    
   wherein said substrate is chosen from a towel, a tissue, a web of cellulosic fibers, and a web of synthetic fibrous material, and    
   wherein said base lotion is at least partially solid at about room temperature and at least partially liquid at about human skin temperature.    
 
     
     
       3. A method according to  claim 2 , wherein said substrate has been treated with a lotion capable of maintaining skin pH balance, said lotion consisting essentially of said skin pH balancing compound and a base lotion. 
     
     
       4. A method according to claim  3    2 , wherein said pH balancing compound consists essentially of an organic acid. 
     
     
       5. A method according to  claim 4 , herein said skin pH balancing compound further consists essentially of a salt of an organic acid. 
     
     
       6. A method according to claim  3    2 , wherein said skin pH balancing compound is a buffer combination. 
     
     
       7. A method according to  claim 3 , wherein said base lotion comprises, by weight of the lotion composition, (a) at least about 5% of an aromatic ester emollient or a fatty alcohol ester of a non-fatty organic acid emollient or mixture thereof and (b) from about 25% to about 95% of a retention/release agent, wherein said base lotion is at least partially solid at about room temperature and at least partially liquid at about human skin temperature. 
     
     
       8. A substrate treated with an anhydrous lotion that comprises a non- greasy  base lotion and a skin pH balancing compound comprising an organic acid in an amount effective for maintaining the acid mantle of skin, wherein said substrate is chosen from a towel, a tissue, a web of cellulosic fibers, and a web of synthetic fibrous material, and wherein said non- greasy base lotion comprises, by weight of the lotion composition,  
 ( a )  at least about  5   %  of an aromatic ester emollient or a fatty alcohol ester of a non - fatty organic acid emollient or mixture thereof, and    
 ( b )  from about  25   %  to about  95   %  of a retention/release agent,    
   wherein said base lotion is at least partially solid at about room temperature and at least partially liquid at about human skin temperature.    
 
     
     
       9. A substrate treated with a lotion consisting essentially of a non- greasy  base lotion and a skin pH balancing compound in an amount effective for maintaining the acid mantle of skin, wherein said substrate is chosen from a towel, a tissue, a web of cellulosic fibers, and a web of synthetic fibrous material, and wherein said non- greasy  base lotion is capable of at least partially transferring from the substrate to the skin upon contact,
   wherein said base lotion comprises, by weight of the lotion composition,    
 ( a )  at least about  5   %  of an aromatic ester emollient or a fatty alcohol ester of a non - fatty organic acid emollient or mixture thereof, and    
 ( b )  from about  25   %  to about  95   %  of a retention/release agent,    
   wherein said base lotion is at least partially solid at about room temperature and at least partially liquid at about human skin temperature.    
 
     
     
       10. The substrate according to  claim 9 , wherein said base lotion further consists essentially of from about 0% to about 15% water. 
     
     
       11. The substrate according to  claim 9 , wherein said base lotion further consists essentially of from about 10% to about 20% water. 
     
     
       12. The substrate according to  claim 9 , wherein said base lotion further consists essentially of from about 10% to about 15% water. 
     
     
       13. The substrate according to  claim 9 , wherein said base lotion further consists essentially of less than about 20% water. 
     
     
       14. The substrate according to  claim 9 , wherein said base lotion further consists essentially of less than about 5% water. 
     
     
       15. The substrate according to  claim 9 , wherein said base lotion is anhydrous. 
     
     
       16. The substrate according to  claim 9 , wherein said amount effective for maintaining the acid mantle of skin is 1% by weight of the base lotion. 
     
     
       17. The substrate according to  claim 9 , wherein said amount effective for maintaining the acid mantle of the skin is 2% by weight of the base lotion. 
     
     
       18. The substrate according to  claim 9 , wherein said amount effective for maintaining the acid mantle of the skin is from 1% to 2% by weight of the base lotion. 
     
     
       19. The substrate according to  claim 9 , wherein said pH balancing compound consists essentially of an organic acid. 
     
     
       20. The substrate according to  claim 19 , wherein said organic acid is alpha-hydroxy acid, alpha-dihydroxy acid, beta-hydroxy acid, or combinations thereof. 
     
     
       21. The substrate according to  claim 19 , wherein said organic acid is glycolic acid, alpha-acetyl glycolic acid, lactic acid, tartaric acid, alpha-acetyl lactic acid, alpha-hydroxy isobutyric acid, salicyclic acid, mandelic acid, ortho-acetyl mandelic acid, benzilic acid, ortho-acetyl benzilic acid, malic acid, citric acid, gluconic acid, pyruvic acid, sorbic acid, or combinations thereof. 
     
     
       22. The substrate according to  claim 9 , wherein said pH balancing compound consists essentially of an organic acid and the salt of an organic acid. 
     
     
       23. The substrate according to  claim 9 , wherein said pH balancing compound is a buffer combination consisting essentially of an organic acid. 
     
     
       24. The substrate according to  claim 23 , wherein said buffer combination consists essentially of citric acid and disodium phosphate. 
     
     
       25. The substrate according to  claim 23 , wherein said buffer combination consists essentially of disodium citrate and sodium hydroxide. 
     
     
       26. The substrate according to  claim 9 , wherein said substrate is treated with said base lotion in an amount of from about 0.1% to about 25% by weight. 
     
     
       27. The substrate according to  claim 9 , wherein said substrate is treated with said base lotion in an amount of from about 0.5% to about 20% by weight. 
     
     
       28. The substrate according to  claim 9 , wherein said transfer is capable of being activated by body heat. 
     
     
       29. The substrate according to  claim 9 , wherein said transfer is capable of being activated by the addition of water. 
     
     
       30. The substrate according to  claim 9 , wherein said base lotion is capable of wetting the surface of the substrate when melted, being retained on the substrate at room temperature, and partially melting to transfer to the surface of skin when contact is made with body heat. 
     
     
       31. The substrate according to  claim 9 , wherein said base lotion further consists essentially of an emollient and a retention/release agent. 
     
     
       32. The substrate according to  claim 9 , wherein said base lotion further consists essentially of a surfactant. 
     
     
       33. The substrate according to  claim 9 , wherein said substrate is a tissue, towel, napkin, wipe, nonwoven material, diaper, incontinence product, menstrual pad coverstock, applicator, web, gauze, cotton swab, transdermal patch, container or holder. 
     
     
       34. The substrate according to claim  9    33 , wherein said web is a flushable or nonflushable web of cellulosic fibers treated with an amount of said base lotion of from about 0.1% to about 25% by weight of the dry web. 
     
     
       35. The substrate according to  claim 34 , wherein said web has an initial normalized cross direction wet tensile strength of at least about 25 grams/inch as measured using the Finch Cup method and a Wet Abrasion Resistance Number of at least about 4. 
     
     
       36. The substrate according to  claim 34 , wherein said web further consists essentially of a wet strength agent. 
     
     
       37. The substrate according to  claim 36 , wherein said wet strength agent is glyoxal; glutaraldehyde; uncharged chemical moieties selected from a group consisting of dialdehydes, aldehyde-containing polyols, uncharged aldehyde-containing polymers, and cyclic ureas and mixtures thereof; aldehyde containing cationic starch; glyoxalated polyacrylamide, latex emulsions; polyamide-epichlorohydrin; polyamine-epichlorohydrin; urea-formaldehyde; melamine-formaldehyde; polyethyleneimine; mixtures of polyvinyl alcohol and salts of multivalent anions; or combinations thereof. 
     
     
       38. The substrate according to claim  9    33 , wherein said web is a synthetic fibrous material treated with an amount of said base lotion of from about 0.1% to about 25% by weight of the dry web. 
     
     
       39. The substrate according to  claim 1 , wherein said base lotion further comprises from about  0 %  to about  15   %  water.   
     
     
       40. The substrate according to  claim 1 , wherein said base lotion further comprises from about  10 %  to about  20   %  water.   
     
     
       41. The substrate according to  claim 1 , wherein said base lotion further comprises from about  10 %  to about  15   %  water.   
     
     
       42. The substrate according to  claim 1 , wherein said base lotion further comprises less than about  20 %  water.   
     
     
       43. The substrate according to  claim 1 , wherein said base lotion further comprises less than about  5 %  water.   
     
     
       44. The substrate according to  claim 1 , wherein said base lotion is anhydrous. 
     
     
       45. The substrate according to  claim 1 , wherein said amount effective for maintaining the acid mantle of skin is  1 %  by weight of the base lotion.   
     
     
       46. The substrate according to  claim 1 , wherein said amount effective for maintaining the acid mantle of the skin is  2 %  by weight of the base lotion.   
     
     
       47. The substrate according to  claim 1 , wherein said amount effective for maintaining the acid mantle of the skin is from  1 %  to  2   %  by weight of the base lotion.   
     
     
       48. The substrate according to  claim 1 , wherein said pH balancing compound comprises an organic acid. 
     
     
       49. The substrate according to  claim 48 , wherein said organic acid is alpha- hydroxy acid, alpha - dihydroxy acid, beta - hydroxy acid, or combinations thereof.   
     
     
       50. The substrate according to  claim 48 , wherein said organic acid is glycolic acid, alpha- acetyl glycolic acid, lactic acid, tartaric acid, alpha - acetyl lactic acid, alpha - hydroxy isobutyric acid, salicyclic acid, mandelic acid, ortho - acetyl mandelic acid, benzilic acid, ortho - acetyl benzilic acid, malic acid, citric acid, gluconic acid, pyruvic acid, sorbic acid, or combinations thereof.   
     
     
       51. The substrate according to  claim 1 , wherein said pH balancing compound comprises an organic acid and the salt of an organic acid. 
     
     
       52. The substrate according to  claim 1 , wherein said pH balancing compound is a buffer combination comprising an organic acid. 
     
     
       53. The substrate according to  claim 52 , wherein said buffer combination comprises citric acid and disodium phosphate. 
     
     
       54. The substrate according to  claim 52 , wherein said buffer combination comprises disodium citrate and sodium hydroxide. 
     
     
       55. The substrate according to  claim 1 , wherein said substrate is treated with said base lotion in an amount of from about  0 . 1 %  to about  25   %  by weight.   
     
     
       56. The substrate according to  claim 55 , wherein said substrate is treated with said base lotion in an amount of from about  0 . 5 %  to about  20   %  by weight.   
     
     
       57. The substrate according to  claim 1 , wherein said base lotion is capable of at least partially transferring from the substrate to the skin upon contact and activation by body heat. 
     
     
       58. The substrate according to  claim 1 , wherein said base lotion is capable of at least partially transferring from the substrate to the skin upon the addition of water. 
     
     
       59. The substrate according to  claim 1 , wherein said base lotion is capable of wetting the surface of the substrate when melted, being retained on the substrate at room temperature, and partially melting to transfer to the surface of skin when contact is made with body heat. 
     
     
       60. The substrate according to  claim 1 , wherein said base lotion further comprises a surfactant. 
     
     
       61. The substrate according to  claim 1 , wherein said substrate is a flushable or nonflushable web of cellulosic fibers treated with an amount of said base lotion of from about  0 . 1 %  to about  25   %  by weight of the dry web.   
     
     
       62. The substrate according to  claim 61 , wherein said web of cellulosic fibers has an initial normalized cross direction wet tensile strength of at least about  25  grams/inch as measured using the Finch Cup method and a Wet Abrasion Resistance Number of at least about  4 . 
     
     
       63. The substrate according to  claim 62 , wherein said web of cellulosic fibers further comprises a wet strength agent. 
     
     
       64. The substrate according to  claim 63 , wherein said wet strength agent is glyoxal; glutaraldehyde; uncharged chemical moieties selected from a group consisting of dialdehydes, aldehyde- containing polyols, uncharged aldehyde - containing polymers, and cyclic ureas and mixtures thereof; aldehyde containing cationic starch; glyoxalated polyacrylamide, latex emulsions; polyamide - epichlorohydrin; polyamine - epichlorohydrin; urea - formaldehyde; melamine - formaldehyde; polyethyleneimine; mixtures of polyvinyl alcohol and salts of multivalent anions; or combinations thereof.   
     
     
       65. The substrate according to  claim 1 , wherein said substrate is a web of synthetic fibrous material treated with an amount of said base lotion of from about  0 . 1 %  to about  25   %  by weight of the dry web.