Products are split into three levels based on ingredient labels
GO
Best choiceSLOW
Contains ingredients with possible health concernsSTOP
Contains harmful ingredientsSTOP
Opalescence
35% Whitening Gel - Mint
Last verified: April 7, 2026
- Glycerin
- Water (Aqua)
- Carbamide (Urea) Peroxide
- Carbomer
- Hydrogen Peroxide
- PEG-300
- Xylitol
- Sodium Hydroxide
- EDTA
- Flavor (Aroma)
- Potassium Nitrate
- Sodium Fluoride
- Sucralose
Why This Product is Rated STOP
35% Whitening Gel - Mint by Opalescence has been evaluated by Million Marker and contains ingredients with known health concerns. This product is rated STOP, indicating higher concern.
We recommend avoiding STOP-rated products and seeking safer alternatives from our GO or SLOW categories.
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