10 Teeth-Whitening Kits That Actually Work

Crest 3D White Brilliance Toothpaste ($17)

Crest 3D White Brilliance Toothpaste, a two-step daily cleansing toothpaste and whitening treatment, is said to keep your smile up to 99 percent as white as a professional polish. The trick here is to be consistent: use this toothpaste system daily and it can fight stains that begin to develop before they have a chance to set in.