Retinol is also known as Vitamin A1, which is the vitamin known for promoting collagen production and skin renewal. Retinol is also a great exfoliator and works by encourages the release of old skin cells to reveal fresh skin beneath. There’s plenty of options when it comes to adding retinol to your skincare routine – from retinol cream and retinol serum, to capsules you apply to your face and neck after cleansing. Retinol isn’t suitable for everyone – if you have eczema, psoriasis or rosacea, your skin’s weakened moisture barrier will allow retinol to penetrate deeper than it should, which can worsen inflammation.