the.com/whitening
Paying to undo every coffee, wine, and cigarette your teeth ever loved.
means The cosmetic process of bleaching teeth (or skin, paint, paper) to a brighter, paler shade.
from From Old English 'hwit,' kin to words for shining and bright across Germanic tongues; the verb sense of making pale dates back centuries before peroxide strips.
Active agentMost strips use hydrogen peroxide to oxidize stains away.
Skin sideSkin-whitening is a billion-dollar, ethically fraught global industry.
Diminishing returnsTeeth have a natural ceiling; you cannot bleach past enamel.