Abstract: Compositions for improving the elasticity of the vagina and of the perineum during the last trimester of pregnancy, include combining a thiolated compound or mixture thereof with an ester of organic acid or mixture thereof. The compositions according to the present invention improve the elastic properties of the vaginal and/or perineal tissues in terms both of increased extensibility and faster elastic recovery. The compositions according to the present invention may decrease risk of trauma of perineal tissues during delivery, as well as risk of rectal or bladder incontinence as a post-partum short/medium/long term complication.