Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum vs Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores 8.9/9.8 vs Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen at 8.4/9.8. Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum wins for active ingredients.
Head to head
Retinol Skin-Renewing Daily Micro-Dose Serum
SOS FaceGuard SPF 30 Mineral Sunscreen
Score comparison
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum edges ahead, winning 1 of 5 attributes.
Scores last verified: July 2026
Attribute battle
Hydration Efficacy
TIEIrritation Risk
TIEActive Ingredient Strength
Kiehl's WINSIngredient Transparency
TIEFormulation Safety
TIEIngredient face-off
21% overlapOnly in Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum
33 unique
Shared ingredients
9 in common
Only in Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen
30 unique
Why Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum comes out ahead
Where Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum really shines is active ingredient strength, scoring 7.8 compared to Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen's 6.0. Its formula features Niacinamide, Acetyl Dipeptide-1 Cetyl Ester, and Adenosine in high positions, signalling meaningful concentrations.
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum brings Niacinamide, Acetyl Dipeptide-1 Cetyl Ester, and Adenosine as actives, while tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen relies on Allantoin, Bisabolol, and Ceramide Ap. Both approaches have merit, but the positioning and supporting ingredients make the difference.
Best for your skin type
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum 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
Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen is better if you have
- Sensitive skin — the low-irritation formula keeps things gentle
- Dry or dehydrated skin that craves moisture, thanks to Cholesterol
- Anyone who prefers clean, well-vetted formulations
Value comparison
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum comes in at premium pricing with a 8.9 score, which is solid value at that tier.
Our verdict
Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum edges ahead with a slightly stronger formulation, but Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen is still a solid pick.
Frequently asked questions
Which is better: Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum or Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen?
Based on ingredient analysis, Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum scores higher overall. See the full score breakdown above for details on each attribute.
Do Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum and Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen share ingredients?
Yes, they share common ingredients. Check the ingredient face-off section above for a detailed comparison.
What's the main difference between Kiehl's Retinol Skin-Renewing Daily Micro-Dose Serum and Tower 28 Beauty SOS FaceGuard SPF 30 Mineral Sunscreen?
The key differences are in their active ingredients and formulation approach. Check the attribute battle above for a detailed breakdown.