The efficacious Fast Release Wrinkle-Reducing Night Serum from Kiehl's is a skin care saviour helping to visibly smooth areas prone to lines and wrinkles (like the forehead, cheek, and around the mouth).

The star ingredient of this bottle is, of course, retinol, which penetrates up to 15 surface layers deep into the skin to steadily accelerates cell renewal, meaning fine lines are reduced, and your complexion appears visibly smoother and brighter. The brand constantly goes above and beyond to ensure maximum efficacy, so its innovative packaging (which isolates a high concentration of pure Retinol powder so it can be freshly mixed into the serum upon first use) comes as no surprise to seasoned fans.

To Activate: Flip the bottle upside down, remove the bottom cap and set aside. Open pouch, twist the retinol capsule onto the bottom of the bottle. Push down the button down on the capsule to release Retinol-infused powder. Shake vigorously to fully mix into the serum. Remove and discard capsule, replace with original bottom cap.

To Apply: Press down on black button 2-3 times for a pea sized drop. Gently apply over clean, dry skin. Use once a day as part of your night routine.

Born from humble beginnings as an old-world apothecary, Kiehl's began its beauty journey offering its customers homoeopathic and herbal remedies. Dreaming up unique formulas since 1850, the brand prides itself on products made with naturally-derived, skin-loving ingredients, while blurring the lines between science and nature. Fast forward to today, and not much has changed. The Fast Release Wrinkle-Reducing Night Serum is a powerful 0.3% retinol-based formula that helps improve fine lines and wrinkles.

Kiehl's retinol Freshmix - liquid: Aqua / Water, Glycerin, Propanediol, Butylene Glycol, Glycereth-26, Panthenol, 1,2-Hexanediol, Polyglycerin-3, C12-14 Pareth-12, Phenoxyethanol, Caprylyl Glycol, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Betaine, Xanthan Gum, Ethylhexylglycerin, Adenosine, Carbomer, Glyceryl Acrylate/Acrylic Acid Copolymer, Tromethamine, Glycereth-25 Pca Isostearate, T-Butyl Alcohol, Tocopherol.

Kiehl's retinol Freshmix - cap: Cellulose Acetate Butyrate, Tricaprylin, Retinol, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Silica Silylate [Nano] / Silica Silylate, Silica [Nano] / Silica, Magnesium Stearate.

For the latest information, it is recommended to review the ingredient list printed on the packaging of the product prior to usage or consumption.