Compositions suitable for treatment of hair comprisng chelants and methods for reducing oxidative hair damage
A technology of composition and chelating agent, which can be used in hair care, medical preparations containing active ingredients, cosmetics, etc., and can solve problems such as difficulty in dissolving
Inactive Publication Date: 2004-05-12
WELLA OPERATIONS US LLC
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- Abstract
- Description
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- Application Information
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Problems solved by technology
Finally, peroxyacid precursors are poorly soluble, especially in oil-in-water emulsions
[0016] Despite these advances, hair damage due to the highly aggressive chemicals contained in most bleaching, coloring or perming compositions, especially from repeated use thereof, remains a problem, especially in at high pH
Method used
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Embodiment
[0181] The following examples illustrate the oxidative hair coloring compositions of the present invention. It should be understood that the examples and embodiments of the present invention are for illustration only, and various modifications or changes thereto will be apparent to those skilled in the art without departing from the scope of the present invention.
[0182] 1 2 3 4 5 6 7 8 9 10
Ammonium acetate
Ammonia (30% active substances)
Cetyl polyoxyethylene ether-25
sodium benzoate
HBED (disodium salt)
GADS (tetrasodium salt)
EDDS (trisodium salt)
p-phenylenediamine
p-Aminophenol
m-Aminophenol
quality)
trimethylsilylamino di
Methylsiloxane (SF1708)
...
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Abstract
The present invention relates to hair care compositions comprising an oxidizing agent and chelants having ratio calculated at pH 10 of at least 3.20 wherein log KCuL is the common logarithm of the Conditional Stability Constant of said chelant with Cu<2+> and log KCaL is the common logarithm of the Conditional Stability Constant of said chelant with Ca<2+>. Suitable chelants are diamine-N,N'-dipolyacids or monoamine monoamide-N,N'-dipolyacids. The compositions according to the present invention contribute to reducing the oxidative damage sustained by a keratinous fiber such as hair during bleaching, dyeing, perming or other oxidative treatments. Especially preferred diamine dipolyacid is ethylenediamine-N,N'-disuccinic acid (EDDS).
Description
field of invention [0001] The present invention relates to hair care compositions comprising specific chelating agents, and a method of reducing oxidative damage to hair during oxidative treatments of the hair, such as bleaching, oxidative coloring or perming. Background of the invention [0002] Melanin is a natural pigment found in hair. Both melanin and the cells that form the hair are produced naturally in the dermal papillae at the root of the hair. As new cells are produced, older cells are pushed up and out of the scalp to form the hair shaft, which is the part of the hair that can be seen on the scalp. Hair can be schematically described as consisting of a melanin-containing central part called the cortex and an outer layer called the cuticle. It is the cortex that gives the hair properties such as elasticity and curl. [0003] The hair shaft is formed from dead cells that contain a mixture of specialized hair proteins and keratin that transform into different for...
Claims
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IPC IPC(8): A61K8/00A61K8/41A61Q5/08A61Q5/10
CPCA61K8/22A61Q5/10A61K2800/51A61K8/44
Inventor 亨利·D·博斯韦尔珍妮弗·M·马什迈克尔·A·奥尔沙夫斯基约翰·S·帕克
Owner WELLA OPERATIONS US LLC