Where StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum really shines is active ingredient strength, scoring 9.7 compared to Centellian24 Madeca Ampoule's 7.4. Its formula features Sodium Ascorbyl Phosphate, Ascorbyl Glucoside, and Ascorbic Acid in high positions, signalling meaningful concentrations.
Ingredient Transparency is another area of separation. StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum scores 8.5 here versus 7.5 for Centellian24 Madeca Ampoule. 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 centellian24 Madeca Ampoule relies on Niacinamide, Madecassoside, and Asiaticoside. Both approaches have merit, but the positioning and supporting ingredients make the difference.
At mid-range pricing with a score of 8.3, Centellian24 Madeca Ampoule 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.