A formulation comprising: a paraffinic oil; a suitable emulsifier; a polychlorinated (Cu II) phthalocyanine; a silicone surfactant selected from the group consisting of trisiloxanes and silicone polyethers of Formula I where: R = H, CH 3 or COCH 3; x = 1 to 24; n =0 or ≥ 1; m = 1; and water, wherein the formulation is in the form of an oil-in-water emulsion and the polychlorinated (Cu II) phthalocyanine is maintained in dispersion in the oil-in-water emulsion, wherein either the polychlorinated (Cu II) phthalocyanine is dispersed in water; and the emulsifier is selected from the group consisting of natural and synthetic alcohol ethoxylates; alcohol alkoxylates; alkyl polysaccharides; glycerol oleate; polyoxyethylene-polyoxypropylene block copolymers of MW 1100 to 11400 and 10 to 80% EO; nonyl phenol ethoxylates; polymeric surfactants; polyethylene glycols; sorbitan fatty acid ester ethoxylates; and mixtures thereof; or wherein the polychlorinated (Cu II) phthalocyanine is dispersed in oil; the emulsifier is selected from the group consisting of natural or synthetic alcohol ethoxylates; polymeric surfactants; sorbitan fatty acid esters; and mixtures thereof; and the formulation further comprises a polyethylene glycol according to Formula: R 1 -O-(CH 2 -CH 2 -O) n -R 2 Formula where: R 1 = H or CH 2 =CH-CH 2 or COCH 3; R 2 = H or CH 2 =CH-CH 2 or COCH 3; and n ≥ 1. a paraffinic oil; a suitable emulsifier; a polychlorinated (Cu II) phthalocyanine; a silicone surfactant selected from the group consisting of trisiloxanes and silicone polyethers of Formula I where: R = H, CH 3 or COCH 3; x = 1 to 24; n =0 or ≥ 1; m = 1; and water, wherein the formulation is in the form of an oil-in-water emulsion and the polychlorinated (Cu II) phthalocyanine is maintained in dispersion in the oil-in-water emulsion, wherein either the polychlorinated (Cu II) phthalocyanine is dispersed in water; and the emulsifier is selected from the group consisting of natural and synthetic alcohol ethoxylates; alcohol alkoxylates; alkyl polysaccharides; glycerol oleate; polyoxyethylene-polyoxypropylene block copolymers of MW 1100 to 11400 and 10 to 80% EO; nonyl phenol ethoxylates; polymeric surfactants; polyethylene glycols; sorbitan fatty acid ester ethoxylates; and mixtures thereof; or wherein the polychlorinated (Cu II) phthalocyanine is dispersed in oil; the emulsifier is selected from the group consisting of natural or synthetic alcohol ethoxylates; polymeric surfactants; sorbitan fatty acid esters; and mixtures thereof; and the formulation further comprises a polyethylene glycol according to Formula: R 1 -O-(CH 2 -CH 2 -O) n -R 2 Formula where: R 1 = H or CH 2 =CH-CH 2 or COCH 3; R 2 = H or CH 2 =CH-CH 2 or COCH 3; and n ≥ 1. where: R = H, CH 3 or COCH 3; x = 1 to 24; n =0 or ≥ 1; m = 1; and water, wherein the formulation is in the form of an oil-in-water emulsion and the polychlorinated (Cu II) phthalocyanine is maintained in dispersion in the oil-in-water emulsion, wherein either the polychlorinated (Cu II) phthalocyanine is dispersed in water; and the emulsifier is selected from the group consisting of natural and synthetic alcohol ethoxylates; alcohol alkoxylates; alkyl polysaccharides; glycerol oleate; polyoxyethylene-polyoxypropylene block copolymers of MW 1100 to 11400 and 10 to 80% EO; nonyl phenol ethoxylates; polymeric surfactants; polyethylene glycols; sorbitan fatty acid ester ethoxylates; and mixtures thereof; or wherein the polychlorinated (Cu II) phthalocyanine is dispersed in oil; the emulsifier is selected from the group consisting of natural or synthetic alcohol ethoxylates; polymeric surfactants; sorbitan fatty acid esters; and mixtures thereof; and the formulation further comprises a polyethylene glycol according to Formula: R 1 -O-(CH 2 -CH 2 -O) n -R 2 Formula where: R 1 = H or CH 2 =CH-CH 2 or COCH 3; R 2 = H or CH 2 =CH-CH 2 or COCH 3; and n ≥ 1. where: R 1 = H or CH 2 =CH-CH 2 or COCH 3; R 2 = H or CH 2 =CH-CH 2 or COCH 3; and n ≥ 1.