Prepare to be amazed! The serum bar is amazingly hydrating, costing less than many other serums I have used, is SO travel-friendly, and allows you to buy refills, which certainly saves you $$. This product is AMAZING, and I never want to be without it! I also purchased the rose quartz, in addition to the regular serum bar—GORGEOUS!! Where has this been all my life??? There is no other way product out there like it, and I absolutely LOVE it!!!