US4775530A
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US
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Method for treatment and prevention of pseudofolliculitis barbae
Assignee: NV Perricone LLC
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Filing: 1987-01-06
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Granted: 1988-10-04
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Expires: 2007-01-06
Abstract
Abstract Treatment and prevention of pseudofolliculitis barbae ("razor bumps") is effected by topical application to beard areas of an alpha-hydroxy acid or derivative thereof, most preferably glycolic acid or glycolic acid derivatives, and most preferably as a component of a cosmetically acceptable lotion, cream, ointment, soap, shaving foam, stick, gel or solution.
Inventors
- 👤 Nicholas V. Perricone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:26
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/365; A61Q; A61Q9/00; A61Q9/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
95 words
A method for treating a subject having a pre-existing condition of pseudofolliculitis barbae and/or for substantially preventing the occurrence or reoccurrence of such condition in subjects who have exhibited such condition or who are prone to such condition, comprising topically applying to beard areas of said subject, in an amount effective to reduce pre-existing pseudofolliculitis facial lesions and/or effective to substantially prevent ingrowth of emerged facial hairs, an active compound selected from the group consisting of (a) alpha-hydroxy acids; (b) derivatives of alpha-hydroxy acids effective to treat and/or prevent pseudofolliculitis barbae; and (c) mixtures thereof.
Claim 2
Independent Claim
95 words
A method for treating a subject having a pre-existing condition of pseudofolliculitis barbae and/or for substantially preventing the occurrence or reoccurrence of such condition in subjects who have exhibited such condition or who are prone to such condition, comprising topically applying to beard areas of said subject, in an amount effective to reduce pre-existing pseudofolliculitis facial lesions and/or effective to substantially prevent ingrowth of emerged facial hairs, an active compound selected from the group consisting of (a) alpha-hydroxy acids; (b) derivatives of alpha-hydroxy acids effective to treat and/or prevent pseudofolliculitis barbae; and (c) mixtures thereof.
Claim 3
Dependent Claim
35 words
The method according to claim 1 wherein said active compound is a component of a cosmetically acceptable topical preparation selected from the group consisting of gel, soap, shaving foam, solution, cream, ointment, lotion and stick.
Claim 4
Dependent Claim
17 words
The method according to claim 1 wherein said active compound is a component of a shaving composition.
Claim 5
Dependent Claim
24 words
The method according to claim 1 wherein said alpha-hydroxy acid is a lower aliphatic hydroxy acid containing a hydroxyl group on the alpha-carbon atom.
Claim 6
Dependent Claim
23 words
The method according to claim 4 wherein said alpha-hydroxy acid contains a single hydroxyl group other than that associated with the carboxyl moiety.
Claim 7
Dependent Claim
14 words
The method according to claim 5 wherein said alpha-hydroxy acid is a monocarboxylic acid.
Claim 8
Dependent Claim
30 words
The method according to claim 1 wherein said derivative of said alpha-hydroxy acid is selected from the group consisting of esters, amides, lactones, anhydrides, inorganic metal salts and ammonium salts.
Claim 9
Independent Claim
105 words
A method for treating a subject having a pre-existing condition of pseudofolliculitis barbae and/or for substantially preventing the occurrence or reoccurrence of such condition in subjects who have exhibited such condition or who are prone to such condition, comprising topically applying to beard areas of said subject, in an amount effective to reduce pre-existing pseudofolliculitis facial lesions and/or effective to substantially prevent ingrowth of emerged facial hairs, an active compound selected from the group consisting of (a) glycolic acid; (b) a derivative of glycolic acid selected from the group consisting of esters, amides, lactones, anhydrides, inorganic metal salts and ammonium salts; and (c) mixtures thereof.
Claim 10
Independent Claim
105 words
A method for treating a subject having a pre-existing condition of pseudofolliculitis barbae and/or for substantially preventing the occurrence or reoccurrence of such condition in subjects who have exhibited such condition or who are prone to such condition, comprising topically applying to beard areas of said subject, in an amount effective to reduce pre-existing pseudofolliculitis facial lesions and/or effective to substantially prevent ingrowth of emerged facial hairs, an active compound selected from the group consisting of (a) glycolic acid; (b) a derivative of glycolic acid selected from the group consisting of esters, amides, lactones, anhydrides, inorganic metal salts and ammonium salts; and (c) mixtures thereof.
Claim 11
Dependent Claim
38 words
The method according to claim 8 wherein said glycolic acid or derivative thereof is a component of a cosmetically acceptable topical preparation selected from the group consisting of gel, soap, shaving foam, solution, cream, lotion, ointment and stick.
Claim 12
Dependent Claim
20 words
The method according to claim 8 wherein said glycolic acid or derivative thereof is a component of a shaving preparation.
Claim 13
Independent Claim
26 words
The method according to claims 9 or 10 wherein said glycolic acid or derivative thereof comprises from about 2 to 20% by weight of said preparation.
Claim 14
Independent Claim
26 words
The method according to claims 9 or 10 wherein said glycolic acid or derivative thereof comprises from about 3 to 7% by weight of said preparation.
Claim 15
Dependent Claim
25 words
The method according to claim 9 or 10 wherein the pH of said preparation is in the range of from about 2.0 to about 4.0.
Claim 16
Independent Claim
17 words
The method according to claims 8, 9 or 10 wherein said active compound consists of glycolic acid.
Claim 17
Independent Claim
24 words
The method according to claims 8, 9 or 10 wherein said active compound consists of an inorganic metal or ammonium salt of glycolic acid.
Claim 18
Independent Claim
88 words
A method for treating a subject having a pre-existing condition of pseudofolliculitis barbae and/or for substantially preventing the occurrence or reoccurrence of such condition in subjects who have exhibited such condition or who are prone to such condition, comprising topically applying to beard areas of the subject an effective amount of an active compound selected from the group consisting of (a) alpha-hydroxy acids; (b) derivatives of alpha-hydroxy acids selected from the group consisting of esters, amides, lactones, anhydrides, inorganic metal salts and ammonium salts; and (c) mixtures thereof.
Claim 19
Independent Claim
88 words
A method for treating a subject having a pre-existing condition of pseudofolliculitis barbae and/or for substantially preventing the occurrence or reoccurrence of such condition in subjects who have exhibited such condition or who are prone to such condition, comprising topically applying to beard areas of the subject an effective amount of an active compound selected from the group consisting of (a) alpha-hydroxy acids; (b) derivatives of alpha-hydroxy acids selected from the group consisting of esters, amides, lactones, anhydrides, inorganic metal salts and ammonium salts; and (c) mixtures thereof.
Claim 20
Dependent Claim
37 words
The method according to claim 16 wherein said active compound is topically applied in association with a cosmetically acceptable topical preparation selected from the group consisting of gel, soap, shaving foam, solution, cream, ointment, lotion and stick.
Claim 21
Dependent Claim
19 words
The method according to claim 16 wherein said active compound is topically applied in association with a shaving preparation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-10-04 | 1992-04-04 | 1992-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-04 | 1996-04-04 | 1996-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-04 | 2000-04-04 | 2000-10-04 | $7700.00 | Window Closed / Lapsed |