Claims
- 1. A hair treatment composition consisting essentially of:
- (1) 0.01 to 10% by weight of a ferrous salt,
- (2) 0.1 to 10.0% by weight of a non-reducing organic chelate-forming compound having the formula (II): ##STR5## wherein R.sup.1 and R.sup.2 may be the same or different and wherein R.sup.1 represents a hydrogen atom, a straight-chain or branched alkyl group having one to five carbon atoms or an alkenyl group having one to five carbon atoms, and wherein R.sup.2 represents a straight-chain or branched alkyl group having one to five carbon atoms or an alkenyl group having one to five carbon atoms, n is from 0 to 2 and m is from 0 to 6, and wherein when m is 1 to 6, said hydroxyl group may be bound at any position on said R.sup.2 ; and
- wherein said non-reducing organic chelate-forming compound (II) is capable of forming a chelate compound with a ferrous ion, having a pH of from 3 to 6, wherein the stability constant (K.sub.1) between said ferrous ion and said non-reducing organic chelate-forming compound is lower than 3 and wherein said ferrous salt, which is the chelate compound of said ferrous ion with said non-reducing organic chelate-forming compound, is highly soluble in water; and
- (3) 0.0001 to 5% by weight of a direct dye.
- 2. A hair treatment composition consisting essentially of:
- (1) 0.01 to 10% by weight of a ferrous salt,
- (2) 0.1 to 10% by weight of a non-reducing organic chelate-forming compound represented by the following general formula (I): ##STR6## wherein R represents a straight-chain or branched hydrocarbon group having 1 to 10 carbon atoms or an oxane ring, and m is an integer of from 1 to 6, and wherein said group may be bound at any position on said hydrocarbon group R; said non-reducing organic chelate-forming compound (I) being capable of forming a chelate compound with a ferrous ion and having a pH of from 3 to 6; and
- (3) 0.0001 to 5% by weight of a direct dye.
- 3. A hair treatment composition consisting essentially of:
- (1) 0.01 to 10% by weight of a ferrous salt,
- (2) 0.1 to 10.0% by weight of a non-reducing organic chelate-forming compound having the formula (II): ##STR7## wherein R.sup.1 and R.sup.2 may be the same or different and wherein R.sup.1 represents a hydrogen atom, a straight-chain or branched alkyl group having one to five carbon atoms or an alkenyl group having one to five carbon atoms, and wherein R.sup.2 represents a straight-chain or branched alkyl group having one to five carbon atoms or an alkenyl group having one to five carbon atoms, n is from 0 to 2 and m is from 0 to 6, and wherein when m is 1 to 6, said hydroxyl group may be bound at any position on said R.sup.2 ; and
- wherein said non-reducing organic chelate-forming compound (II) is capable of forming a chelate compound with a ferrous ion, having a pH of from 3 to 6, wherein the stability constant (K.sub.1) between said ferrous ion and said non-reducing organic chelate-forming compound is lower than 3 and wherein said ferrous salt, which is the chelate compound of said ferrous ion with said non-reducing organic chelate-forming compound, is highly soluble in water;
- (3) 0.0001 to 5% by weight of a direct dye; and
- (4) an effective amount of a cationic or nonionic surfactant.
- 4. A hair treatment composition consisting essentially of:
- (1) 0.01 to 10% by weight of a ferrous salt,
- (2) 0.1 to 10% by weight of a non-reducing organic chelate-forming compound represented by the following general formula (I): ##STR8## wherein R represents a straight-chain or branched hydrocarbon group having 1 to 10 carbon atoms or an oxane ring, and m is an integer of from 1 to 6, and wherein said group may be bound at any position on said hydrocarbon group R; said non-reducing organic chelate-forming compound (I) being capable of forming a chelate compound with a ferrous ion and having a pH of from 3 to 6;
- (3) 0.0001 to 5% by weight of a direct dye; and
- (4) an effective amount of a cationic or nonionic surfactant.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1-103977 |
Apr 1989 |
JPX |
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Parent Case Info
This application is a divisional of copending application Ser. No. 07/511,216, filed on Apr. 19, 1990, now allowed U.S. Pat. No. 5,064,441, the entire contents of which are hereby incorporated by reference.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2192645 |
Jan 1988 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
511216 |
Apr 1990 |
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