INCI Name: Gold
The gold solution used for cosmetic purposes consists of gold particles dissolved in purified water, making it absorbable by the skin.
Gold particles possess antioxidant properties, which help protect the skin against free radicals. In Solanie products, the gold solution functions as a "catalyst," stimulating and supporting the skin's healthy functions while enhancing the effectiveness of other active ingredients.
For research on its effects and safety, see:
https://www.mdpi.com/1420-3049/27/17/5593
https://health.ec.europa.eu/system/files/2022-08/sccs_o_251.pdf
Anti-inflammatory, antibacterial, and pore-cleansing ingredient, rich in polyphenols and gallic acid.
Rich in phytosterols, has a sweet smell, softens, nourishes and hydrates the skin.