In the bio-sourced formula, composed of up to 85% of ingredients of natural origin, the solvents are replaced by natural ingredients such as wheat, corn, manioc and potato extracts. The bio nail polish collection is 7-free, meaning its formula is free from 7 toxic chemical components commonly found in nail polish : formaldehyde, toluene, dibutyl phthalate (DBP), paraben, camphor, triphenyl phosphate (TPHP), and xylene.