The Boots Company Plc

Marco Demurtas

Paul James Tomlinson

Jake Thomas Hicks

Christopher John Elms

Michael David Bell

According to the present invention there is provided composition in the form of an oil-in-water emulsion having a viscosity of between 15,000 cP (15 Pa-s) and 45,000 cP (45 Pa-s) at 23° C., having a pH of between 2 and 6 and comprising: (i) at least 1.6 wt. % of at least one cross-linked anionic polyelectrolyte resulting from the polymerisation of partially or completely salified 2-methyl 2-[(1-oxo 2-propenyl)amino]1-propane sulfonic acid, with at least one neutral monomer chosen from the N,N-dialkyl acrylamides, wherein each of the alkyl groups comprises between one and four carbon atoms, and at least one monomer of formula (B): wherein R represents a linear or branched alkyl radical comprising eight to twenty carbon atoms and n represents a number greater than or equal to one and less than or equal to twenty, in the presence of at least one cross-linking agent; (ii) at least 4 wt. % of at least one polysorbate; (iii) at least 0.1 wt. % of at least one polysaccharide gum; and (iv) between 6 wt. % and 30 wt. % water. The present invention also provides a composition as defined above obtainable by a process comprising the following steps: (a) in one vessel, homogenising the polysaccharide gum (iii) into the aqueous phase comprising the water at a temperature of between 60° C. and 90° C.; (b) in a vessel separate from that in (a), homogenising the cross-linked anionic polyelectrolyte (i) and the polysorbate (ii) into the oil phase at a temperature of between 60° C. and 90° C.; and (c) combining the ingredients of (a) with the ingredients of (b) through homogenisation at a temperature of between 60° C. and 90° C.

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Valbrembo, Italy

Marco Demurtas