UV-absorbing lipid vesicles
AssigneeGalaxy Surfactants Ltd.
InventorsNirmal Koshti, Shubhangi Naik, Tanaji Jadhav
Life of this patent
Estimating the term…
Abstract
Highly effective vesicular compositions from UV-absorbing lipids are described in the present invention. Combination of UV-absorbing property and the vesicular delivery system results in higher levels of photoprotection to skin and hair. The vesicular compositions of the present invention are made from cationic UV-absorbing lipids of Formula I wherein, ArCO is selected from cinnamoyl, p-methoxy cinnamoyl, p-N,N-dimethylamino benzoyl and combinations thereof, R1 is selected from saturated or unsaturated alkyl group with carbons ranging from C10 to C22.
Claims6
A vesicle (liposome) composition for hair and skin care from cationic UV-absorbing lipids of Formula I,
- wherein ArCO=cinnamoyl, p-methoxy cinnamoyl, p-N,N-dimethylamino benzoyl and combinations thereof and R1=saturated or unsaturated alkyl group with carbons ranging from C10 to C22,
- wherein the diameter of the said vesicles range from 50 nm to 20 μm,
- wherein the said vesicles are substantive to hair and skin and are with or without skin actives or hair actives, wherein the said lipid vesicles encapsulate aqueous phase,
- wherein the UV-absorbing cationic lipids content is between 0.1 to 20% by weight.
A process for preparing a vesicle (liposome) composition for hair and skin care from cationic UV-absorbing lipids of Formula I,
- wherein ArCO=cinnamoyl, p-methoxy cinnamoyl, p-N,N-dimethylamino benzoyl and combinations thereof and R1=saturated or unsaturated alkyl group with carbons ranging from C10 to C22, wherein the diameter of the said vesicles range from 50 nm to 20 μm, wherein the said vesicles are substantive to hair and skin and are with or without skin actives or hair actives, wherein the said lipid vesicles encapsulate aqueous phase, wherein the UV-absorbing cationic lipids content is between 0.1 to 20% by weight, said process comprising (a) dispersing the cationic UV-absorbing lipid in water or buffer solution by sonication and (b) subjecting the dispersion to high shear mixing.
Dependencies are inferred from the claim text.