Powerful-Strength Vitamin C Serum for Glow & Fine Lines
Kiehl's Since 1851 Powerful-Strength Vitamin C Serum for Glow & Fine Lines scores 6.7/9.8 overall. It ranks highest in low irritation risk (9.5) and formulation safety (9.0).
✶ Hero ingredients
Silicone that smooths and protects
Moisture-binding humectant and penetration enhancer
One of the most effective humectants
Score breakdown
Scores last verified: July 2026
What makes Kiehl's Since 1851 Powerful-Strength Vitamin C Serum for Glow & Fine Lines stand out
Kiehl's Since 1851 Powerful-Strength Vitamin C Serum for Glow & Fine Lines is a solid serum with an overall score of 6.7/9.8. Positioned in the premium bracket, it delivers a well-rounded formulation that balances efficacy with gentleness. The formula leads with Dimethicone, Propylene Glycol, Glycerin — ingredients that support the skin barrier and moisture levels.
It performs well on low irritation risk (9.5).
Is this right for you?
Great for
- ✓Sensitive skin — low irritation risk with a gentle formulation
- ✓Safety-conscious shoppers — clean formulation with minimal flags
- ✓Ingredient-aware buyers — transparent, well-documented formula
Key ingredients
- ✶Dimethicone
Softens and smooths — #1 in the INCI list
- ✶Propylene Glycol
Draws in moisture — #2 in the INCI list
- ✶Glycerin
Draws in moisture — #3 in the INCI list
- ✶Ascorbic Acid
Works on your skin — #4 in the INCI list
- ✶Cetyl Peg/Ppg-10/1 Dimethicone
Softens and smooths — #5 in the INCI list
Full ingredient list
15 ingredients — listed in INCI order (highest concentration first)
Compare with similar products
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- INNBEAUTY PROJECT Pro C Serum Brightening Solution with 15% Vitamin C + Ferulic Acid9.7
- innisfree Vitamin C Brightening Serum-Infused Mask for Dark Spots9.7
- Skinfix barrier+ Triple Lipid Activating Serum With Plumping Peptides and Niacinamide9.6
- innisfree Gentle Retinol + Salicylic Acid Acne Serum for Blemishes + Post-Acne Scars9.6
Ingredient breakdown
- Softens and smooths5
- Works on your skin3
- Draws in moisture2
- Formula balancers2
- Added scent2
- Other ingredient1