A wiper for a cosmetic product container, the container comprising a body forming a cavity which is intended to receive the cosmetic product, the wiper comprising: a first part, referred to as the fixing part, which can be fixed to said body, and a second, flexible part, which is designed to extend within the cavity, from a shoulder of said body. The flexible part being further designed so as to prevent the cosmetic product from coming into contact with the shoulder, the flexible part being integral with the fixing part or attached to the fixing part. A container comprises such a wiper and an applicator assembly comprises such a container.