The present invention provides a hair straightening composition with improved ease of use and reduced smoke development during the application of a straightening iron. The composition comprises at least one carboxylic acid of the formula (I) in combination with at least one polymeric thickening agent selected from non-ionic, anionic, cationic and amphoteric polymers having a viscosity of at least 500 mPa.s measured at a polymer concentration of 1% by weight, in water and at 20℃ with a Brookfield viscometer: R-CO-COOH Formula (I)In further aspects, the present invention concerns a process for semi-permanent straightening of the hair, utilizing said composition, the use of the composition for straightening hair, and a kit comprising the composition and a straightening iron.本發明提供一種頭髮拉直組合物,其在施用拉直燙髮器期間的易用性得到改良且煙霧之產生減少。該組合物包含至少一種式(I)之羧酸與至少一種選自非離子、陰離子、陽離子及兩性聚合物之聚合增稠劑之組合,該聚合增稠劑具有藉由布氏黏度計在水中1重量%之聚合物濃度下及在20℃下量測為至少500mPa.s之黏度:R-CO-COOH 式(I)在其他態樣中,本發明係關於一種利用該組合物將頭髮半永久性拉直的方法、該組合物用於拉直頭髮之用途及包含該組合物及拉直燙髮器之套組。
