Optimized Ingredients
Ingredient form, concentration and delivery are selected as one complete system.
Science + proof
The Science Behind SkinCeuticals
Groundbreaking antioxidant research, optimized high-potency formulas and rigorous testing define our approach to visible skin results.
The Duke ParametersNot All Vitamin C
Not All Vitamin C
Is Created Equal
For topical vitamin C to be absorbed, research established three critical parameters: pure L-ascorbic acid, an acidic pH and an optimized concentration.
10–20%Pure L-ascorbic acid
2.0–3.5Optimized acidic pH
30+Years of antioxidant research
Our founding scientist
Dr. Sheldon R. Pinnell
His pivotal work in collagen biology and topical antioxidant delivery created a foundation for modern vitamin C skincare and the SkinCeuticals scientific legacy.
Read Our StoryFormulation charter
Our Scientific Methodology
Rigorous Quality
Stability, compatibility and manufacturing standards preserve intended performance.
Clinical Testing
Studies measure meaningful, visible endpoints under controlled conditions.
Ethical Standards
Safety, transparency and responsible research guide our decisions.