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Cosmia Crème anti-âge jour et nuit 4 en 1 scores 8.2/9.8 and Dr. Althea Vitamin C Boosting Serum 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
39 unique
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These two moisturisers 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.
Active Ingredient Strength is another area of separation. Dr. Althea Vitamin C Boosting Serum scores 6.8 here versus 4.2 for Cosmia Crème anti-âge jour et nuit 4 en 1. That difference comes down to how each formula is built — the ingredient list tells the story.
Cosmia Crème anti-âge jour et nuit 4 en 1 brings Ceramide Np, Tocopheryl Acetate, and Avena Sativa (Oat) Kernel Extract as actives, while dr. Althea Vitamin C Boosting Serum relies on Niacinamide, Dipotassium Glycyrrhizate, and Adenosine. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Cosmia Crème anti-âge jour et nuit 4 en 1 is better if you have
Dr. Althea Vitamin C Boosting Serum is better if you have
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, Cosmia Crème anti-âge jour et nuit 4 en 1 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.
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© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.