This pen features a precision brush to target the surface of each tooth and a clickable top to easily control the gel amount. Each pen has 35 nightly uses, so you can touch up when you need to. The price drops from $24.99 to $18.99 to $10.99. You just have to clip the 40% off coupon found on the product page and checkout with Subscribe & Save to get the discount. Shipping is free over $25. 

Clip the 40% off coupon & checkout with Subscribe & Save.