An advanced-strength retinoid serum from Sunday Riley, featuring an innovative formula with a 6.5% solution of stabilized retinoid blends and botanical, retinol-alternative extracts into the skin. Combining 5% retinoid ester blend, 1% liposomal-encapsulated retinol blend, and 0.5% blue-green algae with natural, retinoid-alternative activity, this serum fights the signs of aging and improves the look of congested and UV damaged skin. Paired with natural ingredients like Hawaiian white honey and cactus extract to give the skin a calm, more even-toned complexion. This retinoid serum targets a wide array of skin concerns, making it great for retinoid beginners and devotees. Sunday Riley is a B Corp Certified line of layer-able formulas that unite the most advanced breakthroughs in cosmetic science with pure, potent botanicals. As the brand's founder, cosmetic chemist, and formulator, Sunday Riley ensures sure each product has countless hours of research and development to produce clean, highly effective formulas that deliver results you can feel good about. Each technology-driven blend delivers active ingredients at maximum concentration, guaranteeing noticeable anti-aging benefits, long-term rejuvenation and instant, luminous results. Beauty Return Policy: We are unable to process returns for opened and used beauty products. All products must be returned in original condition and packaging to our Returns warehouse. Store locations do not accept returns for Beauty products. Made in the USA