The Skin Republic Skin Booster Retinol and Squalene 1% Serum is a water-free formulation infused with 1% retinol to minimise signs of ageing. The velvety serum is enriched with squalene. A true multi-tasking skin hero, the ingredient seeks to moisturise the skin, while reducing the appearance of fine lines and dark spots. The formula also seeks to help dissolve dirt and oil, and can be used as a nightly treatment or combined with any Skin Republic mask to boost results.