Hold your lips away from your teeth with your fingers or a cheap plastic retractor. Saliva is the enemy of instant whitening. If the gel gets wet before it sets, it fails.
Do not guess. If the instructions say 15 minutes, set a timer for 14 minutes and 45 seconds. Over-whitening with "Go" products can cause "zingers" (sharp, shooting nerve pains) that last for hours. smile 2 go
Before applying any Smile 2 Go product, brush your teeth with only water and a soft brush. Do not use toothpaste. Toothpaste leaves a film of fluoride and detergents that prevent the whitening gel from adhering to the enamel. Hold your lips away from your teeth with
| Feature | In-Office Laser | Drugstore Strips | | | :--- | :--- | :--- | :--- | | Time to results | 1 hour | 14 days | 15 minutes | | Cost | $300–$1,500 | $20–$50 | $10–$40 | | Portability | None | Moderate | High (fits in a pocket) | | Sensitivity risk | High | Moderate | Low (usually peroxide-free) | | Application skill | Professional | Medium | Beginner (click-and-go) | Do not guess