In our teeth whitening gel for home use, we use low-concentration peroxides with less than 0.1 percent hydrogen peroxide and carbamide peroxide. This complies with EU Directive 2011/84/EU, which stipulates how much hydrogen peroxide may be contained in over-the-counter products.
Peroxides are oxidizing agents and brighten the teeth during the exposure time. Colored deposits from consumables (coffee, tea, red wine) can be removed and deposits can be decolorized. Discolorations caused by enamel deformities, excessive fluoride amounts, or dental accidents cannot be removed by whitening measures, and dental prostheses, implants, and fillings cannot be whitened.
Current research shows a consensus that peroxides, in and of themselves, do not cause any damage to enamel or dentin. Demineralization, etching, or similar effects can be ruled out when whitening systems are used according to the manufacturer's instructions. For comparison, see our Article with all scientific backgrounds and evidence on teeth whitening.
The carrier materials of the active ingredients in the OnlySmile products are selected and combined in such a way that interactions and possible side effects can be excluded. 
In addition to the active ingredients and the carrier materials (the gel itself), the whitening gel contains a flavoring agent. It leaves a minty-fresh feeling in the mouth.
If you want to take a closer look at the OnlySmile teeth whitening gel now, you can do so in our Online shop Come by. Here you will also find replacement rails, teeth whitening powder, and vouchers. The visit is worth it!
Photo: © lenetstan - shutterstock.com
Author: Beatrix Eckhard (blogguru.de)