Definition of "lightener" [lightener]

• That which lightens. (noun)

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• "I’ve had the bleaching done professionally the last couple of times because I can’t find the right kind of lightener in Ireland, but typically I do it myself."
• "Slice them in half and rub on at bedtime -- the vitamin C in lemon is a natural skin lightener."
• "Snark is a great lightener and keeps things from turning saccharine."