Most brands formulate their vitamin C with ascorbic acid, which is highly unstable & irritates skin. Ours is formulated with the most potent, stable form of pure vitamin C - SODIUM ASCORBYL PHOSPHATE. In blind study, 98% said that our serum was SIGNIFICANTLY MORE NOURISHING than the leading brand. ?  Our dermatologists have formulated our vitamin C serum with our patented C-Boost complex. Clinical tests show a 207% increase in skin hydration within 2 weeks of daily application. After 10 days, 94% of users said their skin looked radiant, soft, healthy and smooth.  Unlike regular serums that either carry too little (<15%) vitamin C to have any effect, or too much (>22%) causing irritation, ours is formulated with the scientifically optimal 20% vitamin C concentration. Hyaluronic acid (5%), ferulic acid (1%), jojoba oil, MSM, retinol, aloe vera and vitamin E further double the serums photoprotective qualities. Other serums are manufactured offshore at 90C with unstable vitamin C that oxidizes and loses all effect within 48 hours. Our serum is formulated with the most stable form of pure vitamin C (SAP), is COLD PROCESSED at 1-4C, and packaged in our patent-pending UV-protective frosted glass bottle for maximum potency and stability. ?  Eclats All-in-One features are unrivalled - PATENTED 24-Release TECHNOLOGY for all-day hydration, NON-COMEDOGENIC & 100% VEGAN formulation, OPTIMAL PH LEVEL for increased absorption, DERMATOLOGIST APPROVED for sensitive skin, and proudly CRUELTY, PARABEN & SILICONE FREE.