The Olay Regenerist 2-in-1 Day Cream & Serum is a luxurious moisturiser designed for the neck and face. This product combines the benefits of a day cream with the hydrating and firming properties of a serum, providing a comprehensive skincare solution. The formulation includes active ingredients such as glycerin and niacinamide, known for their ability to hydrate and firm the skin. With 50ml of product sealed in the tube, this set includes both a serum and a day treatment, making it a convenient addition to any skincare routine.