A must-have in your night time routine, this Anti-Aging 1% Retinol Booster from PAULA'S CHOICE features 1% retinol, liquorice root extract and oat extract to improve the appearance of wrinkles, reduce pore size and improve skin tone. Phewph! A lightweight fluid booster, the inclusion of antioxidant-rich liquorice root extract and skin-soothing oat extract help to effortlessly soothe skin as well as improving the appearance of uneven skin tone. This can be used alone or you can add 2 - 3 drops to your favourite moisturiser or serum. Remember if you're using this day to always follow it with a broad spectrum SPF 30 or higher for hardworking protection too.