Loading...
Horace Sérum Acide salicylique + Niacinamide scores 8.0/9.8 and Isntree C-Niacin Toning Ampoule scores 8.1/9.8 — a near-tie where your skin type decides the winner.
These two are neck and neck — just 0.1 points apart.
Scores last verified: April 2026
18 unique
22 unique
These two serums take different paths to a similar destination. Both formulas include solid hydrating ingredients, and the overall scores reflect that — the gap here is genuinely slim.
Hydration Efficacy is another area of separation. Isntree C-Niacin Toning Ampoule scores 8.5 here versus 5.9 for Horace Sérum Acide salicylique + Niacinamide. That difference comes down to how each formula is built — the ingredient list tells the story.
Isntree C-Niacin Toning Ampoule brings Niacinamide, Melia Azadirachta Flower Extract, and Melia Azadirachta Leaf Extract as actives, while horace Sérum Acide salicylique + Niacinamide relies on Niacinamide, Zinc Pca, and Salicylic Acid. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Horace Sérum Acide salicylique + Niacinamide is better if you have
Isntree C-Niacin Toning Ampoule is better if you have
Isntree C-Niacin Toning Ampoule comes in at budget pricing with a 8.1 score, which is solid value at that tier.
It's a close call — both products score within 0.3 points of each other. Your choice depends on your specific skin concerns.
Based on ingredient analysis, Isntree C-Niacin Toning Ampoule 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.
Some links on this site are affiliate links. We may earn a commission from purchases made through our links, at no extra cost to you. This helps us keep Gracie free and independent.
© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.