Overview Oral-Bs innovative 3D White Whitestrips have a cult following in the USA and can remove 10 years of stains in as little as 14 days*. Oral-B 3D White Whitestrips are thin, flexible strips that are coated with a tooth whitening gel containing hydrogen peroxide. Designed to conform to the shape of your teeth, they work by holding the whitening gel to your teeth. Apply to your teeth for 30 minutes twice a day to whiten and remove years of stains. Oral-B 3D White Whitestrips is available as a 14 count and 28 count pack.