It says "Easy to use"; Simply apply the gel with the applicator brush and keep the light in your mouth. What they don't say is that you will have so much saliva that the whitening gel will be gone long before the 20 minutes are up. I find myself either reapplying the gel or trying to lay on my back so the gel doesn't wash out. I can see a slight lightening effect, but not much. No sensitivity I haven't had. I'm not sure if the product is worth $20 because I expected more whitening effect.
Crest 3D Whitestrips Glamorous White Teeth Whitening π¦· Kit - 16 Treatments + 2 Bonus Express Treatments
16 Review
Custom-Fit Teeth Whitening Trays - Moldable, Hygienic, BPA-Free, Latex-Free, Dental π¦· Grade Guard - Set of 4 Mouth Trays for Comfortable Tooth Whitening
12 Review
Venus Visage Teeth Whitening Pen: 2 Pens for 20+ Uses, Effective & Painless, Sensitivity-Free, Travel-Friendly and Easy to Use for a Beautiful White Smile with Natural Mint Flavor
11 Review
Krucasano Teeth Whitening Pen Kit (4 Pens) - Effective, Painless, and Non-Sensitive - Get π¦· a Beautiful White Smile with Natural Mint Flavor and Easy to Travel with Whitening Gel Pen!
12 Review
Wild Fuel Dental Probiotics: Fresh Breath & Healthy Bacteria Support - Vegan, Cruelty-Free Chewable Tablets for Oral Health - 45 Mint Flavored, Sugar-Free Travel Tin
14 Review
Convenient Listerine Ready! Tabs Whitening Chewable Tablets: Polar Mint Flavor to π¦· Combat Bad Breath, Whiten Teeth, and Eliminate Germs Anywhere, 24 ct, Sugar-Free, Gluten-Free
11 Review
π¦· Colgate Max Fresh Whitening Toothpaste with Breath Strips, Clean Mint, Limited Edition - 6 Oz, 24 Ounce (Pack of 4)
10 Review
π TheraBreath Fresh Breath Chewing Gum: ZINC with Citrus Mint Flavor - Pack of 6 (10 Count)
11 Review