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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).
Moisture-binding humectant and penetration enhancer
Silicone that smooths and protects
One of the most effective humectants
Estimated — based on ingredient analysis. Scores refine as user reviews are added.
Scores last verified: April 2026
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).
Great for
Draws in moisture — #1 in the INCI list
Softens and smooths — #2 in the INCI list
Draws in moisture — #3 in the INCI list
Works on your skin — #4 in the INCI list
Softens and smooths — #5 in the INCI list
20 ingredients — listed in INCI order (highest concentration first)
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© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.