Where StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum really shines is active ingredient strength, scoring 9.7 compared to Paula's Choice Clinical Niacinamide 20% Treatment's 6.7. Its formula features Sodium Ascorbyl Phosphate, Ascorbyl Glucoside, and Ascorbic Acid in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. Paula's Choice Clinical Niacinamide 20% Treatment scores 6.8 here versus 5.8 for StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum. That difference comes down to how each formula is built — the ingredient list tells the story.
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum brings Sodium Ascorbyl Phosphate, Ascorbyl Glucoside, and Ascorbic Acid as actives, while paula's Choice Clinical Niacinamide 20% Treatment relies on Niacinamide, Acetyl Glucosamine, and Ascorbyl Glucoside. Both approaches have merit, but the positioning and supporting ingredients make the difference.
At mid-range pricing with a score of 8.7, Paula's Choice Clinical Niacinamide 20% Treatment is a decent pick. StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum sits at the premium level with a 9.2 score — the higher investment pays off in formulation quality.