Crest 3D White Whitestrips Whitening + Therapy Teeth Whitening Kit, 28 Strips; 14 Treatments $21.99 + Free Shipping

Amazon has the  Crest 3D White Whitestrips Whitening + Therapy Teeth Whitening Kit, 28 Strips; 14 Treatments $21.99 + Free Shipping

-Clip $5 Coupon

• Remove up to 6 years of stains
• Enamel strengthening serum nourishes teeth to strengthen enamel
• Uses the same enamel-safe teeth whitening ingredients dentists use
• Advance Seal Technology's no slip grip stays put so you can talk and drink water while whitening teeth.
• Kit contains 28 Strips; 14 Treatments and Enamel Strengthening Serum.