Like a diamond, your skin's unique beauty arises from a stunning surface plus a youthful structure. Powered by our Black Diamond Truffle Extract and SIRTIVITY-LP™ technology, this extraordinary serum helps fortify skin for a firmer feel and a visibly more perfected surface. The transformative result: 94% of women improved on our Diamond-Brilliant Skin Score, an assessment of skin's improvement in Radiance, Spots, Pores, Even Tone, Firmness and Elasticity. In clinical testing, after just 2 weeks: Skin looked more radiant and even-toned, Dark spot intensity looked reduced, Pores looked reduced, Elasticity was improved, Skin felt firmer, stronger. With continued use, lines looked -21% reduced. The transcendently weightless, delightfully indulgent fluid absorbs quickly to refresh skin and help restore a plumper, smoother feel. The diamond-faceted glass bottle is crafted with a jeweler's precision, and is easily refillable (see refill information) and recyclable. BLACK DIAMOND TRUFFLE EXTRACT: NATURE’S ENERGY SOURCE, UNLEASHED From southwest France come "Extra Class" grade—the rarest and the best, each one harvested exclusively for Re-Nutriv. The latest research reveals an extraordinary discovery: each truffle sustains a rich reservoir of 22 phytonutrients in its unique microbiome. Through our mastery of the extraction process, which requires exceptional precision, these rare truffles are distilled into a powerful skin-energizing extract nearly 10,000 hours in the making.