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StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum scores 9.2/9.8 vs Isntree TW-Real Bifida Ampoule at 8.3/9.8. StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum wins for active ingredients.
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum edges ahead, winning 1 of 5 attributes.
Scores last verified: June 2026
15 unique
36 unique
Where StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum really shines is active ingredient strength, scoring 9.7 compared to Isntree TW-Real Bifida Ampoule's 7.0. Its formula features Sodium Ascorbyl Phosphate, Ascorbyl Glucoside, and Ascorbic Acid in high positions, signalling meaningful concentrations.
Hydration Efficacy is another area of separation. Isntree TW-Real Bifida Ampoule scores 6.9 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 isntree TW-Real Bifida Ampoule relies on Bifida Ferment Lysate, Lactobacillus Ferment Lysate, and Niacinamide. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Isntree TW-Real Bifida Ampoule is better if you have
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum is better if you have
At budget pricing with a score of 8.3, Isntree TW-Real Bifida 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.
StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum edges ahead with a slightly stronger formulation, but Isntree TW-Real Bifida Ampoule is still a solid pick.
Based on ingredient analysis, StriVectin Super-C Retinol Brighten & Correct Vitamin C Serum scores higher overall. See the full score breakdown above for details on each attribute.
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.
Honest skincare intel. No jargon, no gatekeeping — just the ingredients decoded.
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© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.