Kiehl's – Powerful-Strength Line-Reducing Concentrate

A Brief History of Kiehl's

Kiehl's was founded in 1851 as a single pharmacy under the leadership of John Kiehl. The business philosophy introduced by Irving Morse still defines the brand today: "Try before you buy!" The company strongly promotes travel-size versions of its products, making it easy to test before committing.

The Serum

The Kiehl's Powerful-Strength Line-Reducing Concentrate is built around three key ingredients: 12.5% vitamin C, fragmented hyaluronic acid, and glycerin.

Vitamin C protects the skin against environmental stressors and enhances its radiance. Hyaluronic acid plumps the surface layers, supporting the smoothing of fine lines. With regular use, skin can feel firmer and fine lines may visibly diminish.

How to Use

The serum is recommended for the morning routine, layered with other serums. "Suitable for all skin types, including sensitive skin." Regular users report a natural glow and fresh-looking complexion, as well as a boost in SPF effectiveness.

Where to Find It

Available at Kiehl's boutiques and online retailers (Notino). Discounts of 20–25% are possible during regular sales events.