No longer in production, Retails for $99 each. To troubleshoot, please shake serum vigorously for 20 seconds and run through the conditioning disk as many times as you need until it works (usually about twice). It's important to keep your opte refills in at room/warmer temperature for storage to keep the serum fluid. Breakthrough skincare technology meets high-performance ingredients. Formulated for immediate and long-term spot-correcting results with every use. OPTIMIZING SERUM A results-driven, spot-fading serum powered by 5% niacinamide and natural mineral pigments. Clean formulated in Japan without sulfates, parabens, dyes, fragrance, and oil. CONDITIONING DISK Our smart conditioning disk’s self-maintenance and cleaning function ensures optimal device performance for a perfectly calibrated, seamless application every time. ADVANCED MINERAL PIGMENTS Instead of concealing skin, our self-adjusting pigments strategically camouflage your spots for an even-toned, true-to-skin finish that lasts all-day long. 5% NIACINAMIDE Also known as vitamin B3, this skincare super-ingredient is derm-recommended at a clinically proven 5% potency to reduce the look of hyperpigmentation.