Powerful-Strength Line-Reducing Concentrate
Kiehl's Powerful-Strength Line-Reducing Concentrate scores 7.9/9.8 overall. It ranks highest in low irritation risk (9.5) and formulation safety (9.0).
✶ Hero ingredients
Moisture-binding humectant and penetration enhancer
Silicone that smooths and protects
One of the most effective humectants
Score breakdown
Estimated — based on ingredient analysis. Scores refine as user reviews are added.
Scores last verified: July 2026
What makes Kiehl's Powerful-Strength Line-Reducing Concentrate stand out
Kiehl's Powerful-Strength Line-Reducing Concentrate is a solid serum with an overall score of 7.9/9.8. Positioned in the premium bracket, it delivers a well-rounded formulation that balances efficacy with gentleness. The formula leads with Propylene Glycol, Dimethicone, Glycerin — ingredients that support the skin barrier and moisture levels.
It performs well on hydration (6.7) and 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
- ✶Propylene Glycol
Draws in moisture — #1 in the INCI list
- ✶Dimethicone
Softens and smooths — #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
- ✶Ethylhexyl Palmitate
Softens and smooths — #5 in the INCI list
What creators are saying
TikTokReviewers love this potent vitamin C serum for its impressive line-reducing and brightening effects, though they note it can be drying for some skin types and doesn't significantly fade dark spots. They suggest starting with a small amount and applying it at night, and recommend pairing it with a hydrating serum like hyaluronic acid to balance out any dryness. This concentrate is best for anyone looking for serious anti-aging results who has the patience to build up tolerance to its strength.
Based on 4 creator reviewsFull ingredient list
20 ingredients — listed in INCI order (highest concentration first)
Compare with similar products
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Ingredient breakdown
- Softens and smooths8
- Works on your skin3
- Draws in moisture2
- Formula balancers2
- Added scent2
- Other ingredient2
- Holds the formula together1