This is a refill that fits into your existing Re-Nutriv Ultimate Diamond Transformative Brilliance Serum glass bottle. Like a diamond, your skin's unique beauty arises from a stunning surface plus a youthful structure. Powered by Estee Lauder's Black Diamond Truffle Extract and youth-sustaining technology, this extraordinary serum helps fortify skin for a firmer feel and a visibly more perfected surface. Re-Nutriv. Live a life of extraordinary beauty.