How to Use Can be used in your AM & PM skincare routine After cleansing and hydrating with Hyaluronic Acid Serum, gently apply a pea-sized amount of Collagen Booster and pat into the face and neck and follow with preferred moisturizer. We suggest Bio-Active Ceramide Moisturizer for those wanting to tackle first signs of aging and support barrier function. Apply SPF as the last step in your AM skincare routine.