US 9,808,414 B2
Methods, compositions, and kit for whitening hyper pigmented spots on skin
Weilin Mu, Albertson, NY (US); and John R. Castro, Huntington Station, NY (US)
Assigned to ELC Management LLC, Melville, NY (US)
Filed by ELC Management LLC, Melville, NY (US)
Filed on Sep. 13, 2016, as Appl. No. 15/264,009.
Application 15/264,009 is a division of application No. 14/308,406, filed on Jun. 18, 2014, granted, now 9,474,705.
Claims priority of provisional application 61/836,701, filed on Jun. 19, 2013.
Prior Publication US 2016/0374926 A1, Dec. 29, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. A61Q 19/02 (2006.01); A61K 8/89 (2006.01); A61K 8/81 (2006.01); A61K 8/58 (2006.01); A61K 8/891 (2006.01); A61K 8/29 (2006.01)
CPC A61K 8/8152 (2013.01) [A61K 8/29 (2013.01); A61K 8/585 (2013.01); A61K 8/8147 (2013.01); A61K 8/891 (2013.01); A61Q 19/02 (2013.01); A61K 2800/43 (2013.01); A61K 2800/74 (2013.01); A61K 2800/87 (2013.01); A61K 2800/95 (2013.01)] 8 Claims
1. A method for whitening discrete hyper pigmented spots on skin by applying to the discrete spots in need of whitening and not to the surrounding non-hyper-pigmented skin a liquid pigmented treatment composition comprising at least one skin whitening active; from 1-35% of a polymeric coating material comprising a composite polymer that is the reaction product of a silanol endblocked polydimethyl siloxane and a silicate resin; from 1-50% of a volatile solvent selected from isododecane, isohexadecane, dimethicone, cyclomethicone, and mixtures thereof; from 1-50% of a non-volatile silicone oil having a viscosity ranging from 20 to 200,000 cst at room temperature; from 0.1-40% of a silicone surfactant; and from 0.5 to 65% titanium dioxide in combination with pigments; wherein the composition upon exposure to ambient air and moisture in skin, hardens to a water resistant, water vapor permeable, conformable solid film and remain unchanged in adherence to the spots for 24 to 48 hours after application and is thereafter applied to the spots every 12 to 72 hours to color the spots to shade match them to the surrounding untreated skin while whitening the treated spots over time while the pigmentation of the untreated surrounding non-hyperpigmented spots remains unchanged.