Ampnbspmavala mavawhite optical nail whitener eradicates dull colour pigments or yellowing from the surface of the nail plate with its innovative formulation which works by using specific pigments that react to uv light hiding unsightly discolourationvarious external factors colour pigments nicotine etc can stain yellow or make your nails look dull and unsightly mavala mavawhite optical nail whitener hides the appearance of stained dull nails whilst giving them a natural and healthy look