Useful for maintenance
If you’ve used the whitening pen from VieBeauti or some other brand, you’ll know that these are extremely useful for touchups and maintenance. These ones are cheaper than the other brands but it works just as well. At 35% Carbamide Peroxide, it whitens your teeth very quickly yet isn’t so strong that it’ll damage your gums. For the same amount of money, I would get this over activated charcoal as this isn’t an abrasive and won’t wear down your enamel.
Rating: 5 stars