L'Oréal Professionnel Série Expert Curl Contour Mask is a nourishing hair mask for curly and wavy hair types. The Curl Contour mask offers specific care to tackle the most common concerns with curly hair types. These hair types tend to be drier and sometimes hard to keep defined. This mask will deeply nourish and hydrate each hair strand to make the hair not only appear healthier but feel smoother and lighter. Additionally, it will help to define the curls, making them bouncier and full of movement. Alternatively, this mask can also be used on straight hair types to prep for curling. The formula contains glycerin and INCELL. Both ingredients grant deep hydration and nourishment to ensure a truly enhanced curl definition. Moreover, the mask will help to repair the hair improving its vitality and general appearance over time.