1 oz.; HOW TO USE IT: 1. First cleanse your skin thoroughly.; 3. Now massage in a little Diamond Extreme Oil using the High Definition Massager.; 2. Apply your regular serum.; 4. Follow-up immediately with the Diamond Extreme Mask to boost benefits.; PRO TIPS: Apply Diamond Extreme Oil along with Diamond Extreme Mask every night for two weeks to achieve a nourishing shock solution.; For added boost, mix a few drops of Diamond Extreme Oil into your regular cream (and hand cream) for a little extra skin nourishment.; This product is part of BEAUTYSPACE, a luxe beauty boutique filled with cult favorites and innovative must-haves.