Abstract: The invention relates to a method for performing treatment of hair, where an agent such as a reducing agent that acts chemically on the hair is used. The invention employs a flexible carrier material where the agent has been absorbed. The flexible carrier material is packaged in a damp state and stored in a moisture-tight package in the form of a continuous tape. In use, the package is opened and the tape is put into a use package. The carrier material is taken out in pieces of desired sizes from the use package. The invention further relates to a product system for performing treatment of hair, which system includes flexible carrier material packaged in a damp state as well as a moisture-tight package. The carrier material has been packaged in the form of a continuous tape in a moisture-tight package. The product system further includes a use package for dosing the carrier material.

Abstract: A fibrous material including a fibrous material, urea peroxide absorbed on the fibrous material, and a bicarbonate anion containing substance absorbed on the fibrous material.

Abstract: Skin or hair care product contains an agent acting cosmetically on the hair or skin, for example thioglycolic acid. The product is fibrous material, wherein the cosmetically acting material is absorbed, the absorbed material containing amino groups. A cellulose-based fiber containing polysilicic acid is used as the fibrous material, preferably viscose fiber, and the active agent is bound to the material through the polysilicic acid.