INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides vs Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores 9.3/9.8 vs INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides at 8.9/9.8. Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide wins for hydration.
Head to head
Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides
Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
Score comparison
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide edges ahead, winning 2 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
INNBEAUTY PROJECT WINSIrritation Risk
TIEActive Ingredient Strength
TIEIngredient Transparency
INNBEAUTY PROJECT WINSFormulation Safety
TIEIngredient face-off
25% overlapOnly in INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides
36 unique
Shared ingredients
12 in common
Only in Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide
27 unique
Why Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide comes out ahead
Where Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide really shines is hydration efficacy, scoring 9.4 compared to INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides's 9.8. With Glycerin, Butylene Glycol, and Pentylene Glycol in its top ingredients, Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide delivers stronger moisture-binding capability.
Ingredient Transparency is another area of separation. INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides scores 8.8 here versus 8.5 for Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide. That difference comes down to how each formula is built — the ingredient list tells the story.
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide brings Niacinamide, Acetyl Dipeptide-1 Cetyl Ester, and Adenosine as actives, while iNNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides relies on Dioscorea Villosa (Wild Yam) Root Extract, Ceramide Np, and Niacinamide. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides 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
- Targeting specific concerns like aging or uneven tone — Dioscorea Villosa (Wild Yam) Root Extract does the heavy lifting
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Glycerin
- Targeting specific concerns like aging or uneven tone — Niacinamide does the heavy lifting
Value comparison
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide comes in at premium pricing with a 9.3 score, which is solid value at that tier.
Our verdict
Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide edges ahead with a slightly stronger formulation, but INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides is still a solid pick.
Frequently asked questions
Which is better: INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides or Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide?
Based on ingredient analysis, Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide scores higher overall. See the full score breakdown above for details on each attribute.
Do INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides and Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between INNBEAUTY PROJECT Elastic Skin Firming & Plumping Vegan Growth Factor Serum with Copper Peptides and Kiehl's Since 1851 Micro-Dose Anti-Aging Retinol Serum with Ceramides & Peptide?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.