Yellow light 590 nm
590 nm · Acts on: dermis
Per its manualHelps energise skin cells and supports lymphatic drainage. The manual recommends it for dark spots, redness and texture.
5 Medical sources 2 Studies 3 Press
Some studies report more firmness, more elasticity and fewer fine lines.
What is known
- Home devices are less powerful than clinic equipment.
- It appears safe in the short term, but regular sessions over months would be needed.
What is not clear yet
The ideal dose, duration and frequency are still unclear, and long-term effects are unknown.
Publications about the technology in general: they do not mention Eternas or endorse its products. Summary made with AI from them.







