A liquid fabric treatment composition comprising either an anionic detersive surfactant or a cationic surfactant which is a conditioning softening active, and: a particle, having a diameter of less than 2 mm comprising: a) a central core of benefit agent, and b) surrounding the central core, a shell of a water soluble (as defined herein) polymeric film-forming material, which is a polyvinyl alcohol: i) modified with a charged derivatising group, wherein the parent material from which the charged derivatising group is obtained is an acetal or aldehyde, and the charged derivatising group comprises at least 0.1 % by weight, based on the total weight of the polymer and ii) optionally, modified with a hydrophobic second derivatising group which is derived from a parent material having a ClogP, calculated according to the method referred to in the description, of greater than 0.5, wherein the film remains intact in the presence of a surfactant, and disintegrates when the concentration of the surfactant reduces to a concentration of less than 1 g/L, thereby releasing the benefit agent. a particle, having a diameter of less than 2 mm comprising: a) a central core of benefit agent, and b) surrounding the central core, a shell of a water soluble (as defined herein) polymeric film-forming material, which is a polyvinyl alcohol: i) modified with a charged derivatising group, wherein the parent material from which the charged derivatising group is obtained is an acetal or aldehyde, and the charged derivatising group comprises at least 0.1 % by weight, based on the total weight of the polymer and ii) optionally, modified with a hydrophobic second derivatising group which is derived from a parent material having a ClogP, calculated according to the method referred to in the description, of greater than 0.5, wherein the film remains intact in the presence of a surfactant, and disintegrates when the concentration of the surfactant reduces to a concentration of less than 1 g/L, thereby releasing the benefit agent. a) a central core of benefit agent, and b) surrounding the central core, a shell of a water soluble (as defined herein) polymeric film-forming material, which is a polyvinyl alcohol: i) modified with a charged derivatising group, wherein the parent material from which the charged derivatising group is obtained is an acetal or aldehyde, and the charged derivatising group comprises at least 0.1 % by weight, based on the total weight of the polymer and ii) optionally, modified with a hydrophobic second derivatising group which is derived from a parent material having a ClogP, calculated according to the method referred to in the description, of greater than 0.5, wherein the film remains intact in the presence of a surfactant, and disintegrates when the concentration of the surfactant reduces to a concentration of less than 1 g/L, thereby releasing the benefit agent. i) modified with a charged derivatising group, wherein the parent material from which the charged derivatising group is obtained is an acetal or aldehyde, and the charged derivatising group comprises at least 0.1 % by weight, based on the total weight of the polymer and ii) optionally, modified with a hydrophobic second derivatising group which is derived from a parent material having a ClogP, calculated according to the method referred to in the description, of greater than 0.5, wherein the film remains intact in the presence of a surfactant, and disintegrates when the concentration of the surfactant reduces to a concentration of less than 1 g/L, thereby releasing the benefit agent.