Where StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum really shines is active ingredient strength, scoring 9.7 compared to The INKEY List 360 Acne Clearing Serum with Dioic & Salicylic Acid's 5.2. Its formula features Sodium Ascorbyl Phosphate, Ascorbyl Glucoside, and Ascorbic Acid in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. The INKEY List 360 Acne Clearing Serum with Dioic & Salicylic Acid scores 7.5 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 the INKEY List 360 Acne Clearing Serum with Dioic & Salicylic Acid relies on Salicylic Acid, Zinc Pca, and Lactic Acid. Both approaches have merit, but the positioning and supporting ingredients make the difference.
At premium pricing with a score of 9.2, StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum delivers strong value. The INKEY List 360 Acne Clearing Serum with Dioic & Salicylic Acid sits at the mid-range level with a 8.7 score — the extra cost doesn't translate to better scores here.