Overview
Kits pair a peroxide gel with a blue-light LED mouthpiece marketed to accelerate whitening. Peroxide concentration and light characteristics vary between products.
How it works
- The peroxide gel does the chemical work of oxidizing stain molecules.
- The added benefit of consumer-grade LEDs over gel alone is not clearly established in independent research.
Best for
- Users who want an at-home experience that mimics the format of a professional treatment.
What to consider
- Marketing claims about the light itself often outrun the evidence - the gel matters more than the glow.
- One-size-fits-all mouthpieces can allow gel to contact gums.
Evidence note