Antioxidant vitamin C gets glowing reviews for good reason—it's naturally brilliant at brightening your complexion and protecting against environmental aggressors like pollution and blue light. Our new Booster Serums are packed with high-performance ingredients to supercharge your skincare routine for instant, visible results. This formula contains 10% active ingredients, including 2% of a skin-kind derivative of vitamin C that won’t irritate dry or sensitive skin. Vitamin E (1%) boosts the effectiveness of vitamin C while nourishing the skin, and 7% vitamin F helps moisturize and strengthen the skin barrier. With 95% naturally derived ingredients, it's safe for all skin types.

Our kind-to-skin promise? Like all Simple products, our Booster Serum is dermatologically tested, non-comedogenic, and free from harsh chemicals, alcohol, mineral oils, artificial colors, and perfumes. Plus, it’s PETA-approved vegan.

How to use: Shake, drop, dab – it's that simple. After cleansing, apply our non-sticky, non-greasy serum alone or mix a few drops into your favorite moisturizer for a quick vitamin C boost. It also works beautifully under makeup. For an extra kick, try combining our 10% Vitamins C + E + F Booster Serum with our 3% Hyaluronic & Vitamin B5 Booster Serum (a few drops of each) in the morning, and don’t forget to follow with SPF.

The best part? Real people love it. 83% agreed their skin felt instantly smoother and softer, and 8 out of 10 liked how the Booster Serum felt. The stats don’t lie, so give it a try and let us know what you think by leaving a review!