The present invention relates to a chitine-glucane copolymer in the form of micrometric particles. The invention also provides a composition containing a chitine-glucane copolymer in the form of micrometric particles for the preparation of cosmetic and essentially dermatologic and dermo-cosmetic compositions. More precisely, the invention relates to a cosmetic composition for a face or body care such as hydrating, strengthening and smoothing the skin and having an anti-ageing and even anti-wrinkle effect. The purpose of the invention is also to provide a porous material that can for example be used in tissue engineering or cell culture, or that can be used as a material in the cosmetic or pharmaceutical industry.
