Smile Science Harley Street Dual Professional Advanced Teeth Whitening Pen (Pack of 2) Upto 8 Shades Whiter 100% safe for Enamel Vegan For Sensitive Teeth Rapid Results Clinically Proven hidden With the reflexology tools Dual Entry Cable Connector With the reflexology tools MADE IN THE USA: Weiler Wolverine flap discs are proudly made in the USA at our factory in Cresco Easy and Convenient On the go easy maintenance and whitening pen achieves visibly whiter results at home For Sensitive Teeth Non sensitive teeth whitening Pen is gentle and 100% safe for enamel with zero sensitivity and discomfort Read more Read more Smile Science Harley Street Teeth Whitening Pen Smile Science Harley Street Teeth Whitening Kit Smile Science Harley Street Teeth Whitening Strips Smile Science Harley Street Teeth Whitening Treatment & Aftercare Smile Science Harley Street Vita White Teeth Whitening Toothpaste Stain Removal ✓ ✓ ✓ ✓ ✓ Teeth Whitened Up To 8 Up To 8 Up To 6 Up To 8 Up To 3 Course Length (Days) Ongoing 10 14 10 Ongoing Vegan ✓ ✓ ✓ ✓ ✓ Cruelty Free ✓ ✓ ✓ ✓ ✓ Do not use more than twice daily