The Weleda Pore Refining Vitamin C Serum Booster Drops is a fragrance-free concentrated serum formulated with vitamin C and fermented cranberry extract for a more even, refined complexion. Sodium ascorbyl phosphate, a gentle, stable form of vitamin C, works alongside fermented cranberry extract and pomegranate peel extract to help refine the appearance of pores and even out the look of skin tone. The water-based serum absorbs immediately and suits oily, combination or blemish-prone skin looking for a brighter, smoother finish. Wear it alone or mix a few drops into your face cream for an extra boost.

Weleda tested this serum in a 30-person study over seven weeks of twice-daily use; a four-week check-in during the same study already showed a more even skin tone. NATRUE certified and vegan.