Power Serum and Refills

Exponent Power Serums are activated skincare treatments that combine a concentrated active ingredient powder with a precision-formulated liquid base. Mixing them at the moment of use preserves potency in a way pre-mixed serums cannot, delivering clinically proven actives at the concentration your skin actually needs.

Most serums are pre-mixed with water, which begins degrading key actives like vitamin C and CoQ10 from the moment of manufacturing. Exponent's powder-plus-liquid format keeps ingredients stable until point of use, so you're getting full potency every single time.

Not sure where to start? Take our skin diagnostic to get a personalized recommendation based on your skin type, concerns, and goals.

Yes. For the best experience, we recommend the Pro System, which is designed for layering multiple serums into your routine. The add-on format gives you more value when using more than one active, making it easy to build a full regimen without the guesswork.

Results vary by active, but clinical testing shows measurable improvements within 7 days for CoQ10 and vitamin C users, with more significant changes in skin texture, tone, and firmness at the 4 to 8 week mark.

Yes. All Exponent serums are clinically tested for sensitive skin, including our retinol. If you are pregnant or nursing, our Calm Revival Resveratrol Serum is a pregnancy-safe option that delivers antioxidant and anti-aging benefits without contraindication concerns.