Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Patent
1998-06-26
1999-11-30
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
424450, 424489, 424490, 514828, 514844, 514846, 514847, A61K 700, A61K 914
Patent
active
059938579
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a cosmetic cleanser based on natural ingredients with an especially gentle and mild effect on the skin.
U.S. Pat. No. A 4,673,526 discloses an agent for deep cleansing of the skin, which is an anhydrous cleaning composition with an oily phase, an emulsifier and a particulate abrasive substance such as xanthan gum, carboxymethylamides, cellulose ethers, hydroxyalkylcelluloses or copolymers of acrylic acid and acrylamide.
W094/12151 discloses skin cleansers based on agglomerated silicon dioxide particles.
Swiss Patent CH-A 678,488 describes polyethylene microspheres as the base for a cleanser formulation.
The object of the present invention is to develop a skin cleanser that contains essentially natural cosmetic ingredients as the active ingredients and thus yields a mild but sufficiently intense skin cleaning effect.
This object is achieved according to this invention with a cosmetic skin cleanser based on essentially natural ingredients, comprising an aqueous non-oily suspension, containing vegetable oil, vera gel, jojoba oil, cetaryl glucoside, lipacids PVB and mixtures thereof, and propylene glycol as an additional substance,
Lipacids PVB is a mixture of sarcosine, wheat amino acids and palmitic acid.
A preferred vegetable oil is jojoba oil, galam butter, avocado oil, avocadin, calendula oil and apricot kernel oil, in particular jojoba oil.
A preferred emulsifier is cetaryl glucoside, methyl glucose, sesquistearate and polyglycerol 3-methyl glucose distearate, in particular cetaryl glucoside. The emulsifier may be present in a concentration of approximately 1 to 7 percent by weight.
Cetaryl glucoside (CTFA name) is a valuable plant-based component whose ingredients are extraction products. For example, the glucose is extracted from corn and the fat from coconut oil. The glucolipid structure is free of chemical impurities and the usual solvents. It has both emulsifying and moisturizing effects.
Decyl polyglucose and acyl glutamate (CTFA terminology), the preferred cleansing substances, are surface-active agents which are also derived from natural substances. The detergent substance may be present in an amount of approximately 1 to 15 percent by weight, preferably 3-10 percent by weight.
The microspheres of polyoxymethylene urea used according to this invention have an average diameter of 160 to 200 .mu.m, for example, and are in the form of a soft powder with a slightly granular texture. They are hollow on the inside and filled with the vegetable oil, they have a mild abrasive effect when rubbed on wet skin, and thus they thoroughly remove the dead cells from the skin. At the same time, the hollow spheres are opened when rubbed on the skin, so the oil they contain is released and can develop its moisturizing and soothing skin care effect.
Other active ingredients that may be present in the preparation according to this invention include dexpanthenol, hyaluronic acid, phospholipids and honey extract.
It has been found that due to the interaction of all the components of the formulation, not only does the desired cleansing effect occur, i.e., the dead skin cells are removed, but also a great improvement in the softness of the skin can be observed.
A surprising effect is that it has an extremely good moisturizing effect on the skin, which is more than 100% better than that of comparable preparations. The conventional cosmetic vehicles and excipients which should still be contained in the preparation according to this invention include emulsifiers, various oil components (such as fats, oils, esters, silicone oil, etc.), other ingredients such as allantoin, thickeners, preservatives, perfume oils, chelating agents, active ingredients such as allantoin, and water.
The skin cleanser preparation according to this invention is advantageously applied to wet skin and rubbed into the skin for a few minutes with a circular massaging action. Then it is rinsed off with warm water. When skin is cleansed in this way, an especially natural and uniform skin color is achieved when a self-tanning agen
REFERENCES:
patent: 4673526 (1987-06-01), Zabotto et al.
patent: 5215759 (1993-06-01), Mausner
JP 6-219924 A, IN: Patents Abstracts of Japan C-1271, Nov. 10, No. 588.
Macchio Ralph
Menzel Anette
Stanzl Klaus
Zastrow Leonhard
Howard Sharon
Lancaster Group GmbH
Page Thurman K.
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