skincare guides

Better Together: Vitamin C Serum and Hydrating Cream

After testing our Ascorbic Acid 20 Brightening C Serum (AA20) and Minimalist Hydrating Cream (MHC) separately, we wondered what pairing them together in a regimen could accomplish. What we found was that when paired together, study participants experienced statistically significant improvements in the appearance of skin brightness, wrinkling and firmness as measured by both clinician grading and instrumentation.

Better Together: Vitamin C Serum and Hydrating Cream - Better Together: Vitamin C Serum and Hydrating Cream

Protocol

In 2021, we ran an independent clinical study in Brazil investigating whether a regimen consisting of Ascorbic Acid 20 Brightening C Serum (used once daily) and Minimalist Hydrating Cream (used twice daily), could improve the visible signs of photoaging, including wrinkling, uneven skin tone, and firmness. The study included 29 women, ranging from light to dark skin types, ages 47 through 59. Participants were also given a generic cleanser and sunscreen as adjunct products. 

What and how we measured

Clinical evaluations of visible signs of aging were performed prior to the study and at days 14, 30, 60 and 90. The appearance of wrinkling, firmness and skin tone evenness/brightness were all measured both by dermatologists' visual/tactile assessments and by instrumentation (Chromameter, Cutometer and Visia® CR). 

Results

Dermatologists’ Assessments

At day 30, there was statistically significant improvement in the appearance of wrinkling (p=.001), firmness (p<.001) and skin tone evenness (p=.003) as measured by dermatologists’ visual assessment. These improvements continued to be statistically significant at subsequent checkpoints at day 60 and day 90 of the study.

Instrumental Measurements

At day 30, there was statistically significant improvement in the appearance of wrinkling (p<.001), skin brightness (p=.025), and firmness (p=.001) as measured by instrumentation (Visia CR, Chromameter, and Cutometer respectively). These improvements continued to be statistically significant at subsequent checkpoints at day 60 and day 90 of the study.

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