Blue LED light
6 LEDs · Acts on: surface
Per its manualSix cool blue LEDs built into the head. Designed to help clean and whiten teeth.
2 Medical sources 2 Studies
Peroxide is what whitens; the role of light is unclear.
What is known
- A meta-analysis of 21 trials found no significant colour difference with light.
- Temporary tooth sensitivity and gum irritation are the most common side effects.
What is not clear yet
The meta-analyses refer to in-office gels, and evidence on at-home LED kits is limited.
Publications about the technology in general: they do not mention Eternas or endorse its products. Summary made with AI from them.







