COSRX The Retinol 0.5 Oil is a highly concentrated formula designed to promote smooth skin texture and visibly firm skin. This product combines 0.5% pure retinol with vitamin E and squalane to improve radiance and provide anti-aging benefits. The lightweight oil is ideal for nightly use, gradually improving skin firmness and smoothness with consistent application. Packaged in a 20ml bottle, it includes a dropper for precise application to the face and hands.