Back to results
US 5,968,528 AGranted
Skin care compositions
AssigneeThe Procter & Gamble Company
InventorsGeorge Endel Deckner, James Pedrosa SaNogueira, Jr., Joseph Michael Zukowski
Life of this patent
Estimating the term…
Abstract
Disclosed are skin care compositions containing a vitamin B.sub.3 compound which generally improve the quality of the skin, particularly human facial skin. More particularly, the present invention relates to niacinamide containing skin care compositions with improved skin compatibility.
Claims7
Skin care compositions comprising:
- a.) from about 2% to about 5% of niacinamide;
- b.) from about 0.05% to about 0.2% of a preservative component, comprising:
- i.) a formaldehyde donor comprising N,N"-methylene bis [N'-[(Hydroxymethyl)-2,5,-dioxy-4-imidazolodinyl]urea];
- and
- ii.) a halopropynyl compound comprising 3-iodo-2-propynylbutyl carbamate;
- wherein the weight ratio of (i) to (ii) is from about 2000:1 to about 1:1;
- c.) from about 0.05% to about 1% of a hydrophilic emulsifier comprising a blend of sorbitan stearate and sucrose cocoate;
- d.) from about 1% to about 10% of a structuring agent selected from the group consisting of stearic acid, palmitic acid, stearyl alcohol, cetyl alcohol, behenyl alcohol, steareth-2, and combinations thereof;
- and
- e.) from about 0.25% to about 2% by weight of the composition of a thickening agent selected from homopolymers and copolymers of acrylic acid, methacrylic acid, lower alkyl esters thereof, and C10-30 alkyl acrylates crosslinked with allyl ethers of sucrose or petaerythritol.
7 more elements
Dependencies are inferred from the claim text.