How to Apply Retinol Fast Release Wrinkle-Reducing Night Serum | Kiehl’s

Learn how to apply Kiehl’s Retinol night serum. Packaged in our unique powder-to-serum technology, this serum is designed for you to personally mix for a fresh, potent, and fast-absorbing formula. With continuous use, experience a visible reduction in fine lines and deep wrinkles.

5 Comments

  1. Mine is broken and I put it in trash I wish the instructions were more clear 65 down the drain sickening

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