Leave-on non-solid skin composition to improve skin appearance comprising: (a) from 0.01 to 15% by weight of the composition of 12-hydroxystearic acid; (b) from 0.1 to 30% by weight of the composition of a nonionic surfactant comprising a high HLB nonionic sugar surfactant with an HLB of at least 7 selected from the group consisting of alkyl polyglucosides, sugar fatty acid esters, aldobionamides, polyhydroxy fatty acid amides and mixtures thereof, optionally, a low HLB nonionic co-surfactant with an HLB below 7 selected from the group consisting of sorbitan fatty acid esters, monoglycerides, ethoxylated fatty acid sorbitan esters; ethoxylated fatty acid esters, fatty alcohols, sugar surfactants, and mixtures thereof, with the proviso that the low HLB nonionic co-surfactant must be present when the amount of the high HLB sugar surfactant is below 0.5%; (c) wherein the weight ratio of total nonionic surfactant to 12-hydroxystearic acid is in the range from 90:10 to 25:75; (d) from 0.05% by weight to 10% by weight of a thickening polymer, wherein the weight ratio of the polymer to the total nonionic surfactant is in the range of from 5:95 to 70:30; (e) wherein the viscosity of the composition is in the range of from 1Pas to 500Pas at room temperature as measured in the examples. (f) wherein the composition is structurally reversible through temperature cycling between room temperature and 50°C. (a) from 0.01 to 15% by weight of the composition of 12-hydroxystearic acid; (b) from 0.1 to 30% by weight of the composition of a nonionic surfactant comprising a high HLB nonionic sugar surfactant with an HLB of at least 7 selected from the group consisting of alkyl polyglucosides, sugar fatty acid esters, aldobionamides, polyhydroxy fatty acid amides and mixtures thereof, optionally, a low HLB nonionic co-surfactant with an HLB below 7 selected from the group consisting of sorbitan fatty acid esters, monoglycerides, ethoxylated fatty acid sorbitan esters; ethoxylated fatty acid esters, fatty alcohols, sugar surfactants, and mixtures thereof, with the proviso that the low HLB nonionic co-surfactant must be present when the amount of the high HLB sugar surfactant is below 0.5%; a high HLB nonionic sugar surfactant with an HLB of at least 7 selected from the group consisting of alkyl polyglucosides, sugar fatty acid esters, aldobionamides, polyhydroxy fatty acid amides and mixtures thereof, optionally, a low HLB nonionic co-surfactant with an HLB below 7 selected from the group consisting of sorbitan fatty acid esters, monoglycerides, ethoxylated fatty acid sorbitan esters; ethoxylated fatty acid esters, fatty alcohols, sugar surfactants, and mixtures thereof, with the proviso that the low HLB nonionic co-surfactant must be present when the amount of the high HLB sugar surfactant is below 0.5%; (c) wherein the weight ratio of total nonionic surfactant to 12-hydroxystearic acid is in the range from 90:10 to 25:75; (d) from 0.05% by weight to 10% by weight of a thickening polymer, wherein the weight ratio of the polymer to the total nonionic surfactant is in the range of from 5:95 to 70:30; (e) wherein the viscosity of the composition is in the range of from 1Pas to 500Pas at room temperature as measured in the examples. (f) wherein the composition is structurally reversible through temperature cycling between room temperature and 50°C.