ECOLUV is a multifunctional natural cosmetic ingredient, composed of micro and nano particles of lignin which are produced through an eco-sustainable and scalable procedure. This has allowed the real circular valorisation of lignin, usually discarded by paper mills or biorefineries. ECOLUV is the alternative to: i) traditional synthetic UV filters known as pollutants and toxicity; ii) often recalcitrant synthetic chelators; iii) compounds with antioxidant activity; iii) antimicrobial preservatives iv) emulsion stabilizer. ECOLUV is a mature product, provided with certifications, technical and safety data sheets, and therefore ready for marketing.