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 discolouration.various external factors colour pigments, nicotine etc'. '.strtoupper('c')an stain, yellow or make your nails look dull and unsightly'. '.strtoupper('m')avala mavawhite optical nail whitener hides the appearance of stained, dull nails, whilst giving them a natural and healthy look.thanks to the matte finish when used on its own, mavawhite may also be used by men whose nails have become stained or yellowed, perhaps due to nicotine, and who are concerned about the appearance of their nails.there are three ways to use mavawhite 1'. '.strtoupper('f')or a matte effect, apply mavawhite onto bare nails.2'. '.strtoupper('f')or a longer hold and shiny effect, apply a base coat before mavawhite and a top coat after.3'. '.strtoupper('f')or a luminous nail polish shade which is not distorted by yellow nails, apply mavawhite after a base coat and before nail polish and top coat.