SAVE 35%: As of Oct. 5, the Crest 3D Whitestrips Professional Effects kit is on sale for $29.99 at Amazon — down from $45.99 for a limited time.

We’ve seen plenty of the best early Prime Day deals , even before the Big Deal Days event starting on Oct. 7 and 8, but this Crest 3D Whitestrips discount is one that literally shines.

In honor of Amazon Prime Day , the fan-favorite whitening kit is back down to $29.99, a 35% savings off its usual $45.99 price tag. For anyone who’s been eyeing an at-home smile refresh before holiday season selfies kick in, now’s the time to stock up.

The Crest 3D Whitestrips Professional Effects kit comes with 22 treatments total (20 regular and two bonus 1-hour express treatments) and 44 strips overall. It’s designed to whiten like a $400 professi

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