Augustinus Bader The Vitamin C Serum vs IT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+
Augustinus Bader The Vitamin C Serum scores 8.7/9.8 and IT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+ scores 8.6/9.8 — a near-tie where your skin type decides the winner.
Head to head
The Vitamin C Serum
Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+
Score comparison
These two are neck and neck — just 0.1 points apart.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
IT Cosmetics WINSIrritation Risk
TIEActive Ingredient Strength
IT Cosmetics WINSIngredient Transparency
IT Cosmetics WINSFormulation Safety
TIEIngredient face-off
11% overlapOnly in Augustinus Bader The Vitamin C Serum
25 unique
Shared ingredients
8 in common
Only in IT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+
65 unique
Why these two are neck and neck
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.
Active Ingredient Strength is another area of separation. IT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+ scores 8.9 here versus 6.7 for Augustinus Bader The Vitamin C Serum. That difference comes down to how each formula is built — the ingredient list tells the story.
Augustinus Bader The Vitamin C Serum brings Ascorbyl Glucoside, Niacinamide, and Tocopheryl Acetate as actives, while iT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+ relies on Snail Secretion Filtrate, Niacinamide, and Curcuma Longa (Turmeric) Root Extract. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
Augustinus Bader The Vitamin C Serum is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Anyone who prefers clean, well-vetted formulations
IT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+ is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Butylene Glycol Dicaprylate/Dicaprate
- Targeting specific concerns like aging or uneven tone — Snail Secretion Filtrate does the heavy lifting
Value comparison
Augustinus Bader The Vitamin C Serum comes in at luxury pricing with a 8.7 score, which is solid value at that tier.
Our verdict
It's a close call — both products score within 0.3 points of each other. Your choice depends on your specific skin concerns.
Frequently asked questions
Which is better: Augustinus Bader The Vitamin C Serum or IT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+?
Based on ingredient analysis, Augustinus Bader The Vitamin C Serum scores higher overall. See the full score breakdown above for details on each attribute.
Do Augustinus Bader The Vitamin C Serum and IT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+ share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between Augustinus Bader The Vitamin C Serum and IT Cosmetics Bye Bye Foundation Oil-Free Matte Full Coverage Moisturizer with SPF 50+?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.
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