Powerful-Strength Line-Reducing Concentrate

Kiehl’s original anti-aging Vitamin C serum, Powerful-Strength Line-Reducing Concentrate, now has even more potency with 12.5% Vitamin C and Hyaluronic Acid.

Now formulated with even more Vitamin C, Dermatologist Solutions™ Powerful-Strength Line-Reducing Concentrate incorporates a potent 10.5% L-Ascorbic Acid for reducing lines and wrinkles and 2% Ascorbyl Glucoside to improve skin’s texture and radiance. In addition to these high levels of Vitamin C, this anti-aging serum now includes Hyaluronic Acid to smooth and hydrate skin. This powerful Vitamin C serum is carefully formulated to provide clinically proven results in a concentration gentle enough for sensitive skin.

GOOD FOR
• Visibly reduces fine lines and wrinkles leaving skin feeling plump and firm overtime
• Smoothes skin’s texture and helps visibly minimize the appearance of pores 
• Antioxidant Vitamin C penetrates skin’s deeper surface layers and remains effective in skin for up to 6 days
• Provides visible results in just 2 weeks
• Dermatologist-tested for safety
• For all skin types, including sensitive skin

MADE WITH
Pure Vitamin C
L-Ascorbic Acid, also known as Pure Vitamin C, is a highly efficacious antioxidant known for its ability to improve the appearance of skin aging. In addition to antioxidant protection, Pure Vitamin C is known to help boost radiance, improve texture and visibly reduce the appearance of lines, wrinkles and other signs of aging. Pure Vitamin C has many benefits including, the ability to gently exfoliate dead skin cells to reveal a brighter-looking skin, helping prevent uneven skin tone and stop pigmentation from producing so your complexion can appear brighter and clearer. Not only that, Vitamin C is a powerful antioxidant, which means it can neutralise environmental aggressors like UV rays and pollution from creating free radicals on your skin that cause premature signs of visible aging, making it a great choice for anti-wrinkle and anti-aging skincare.

Vitamin Cg
Vitamin Cg, also known as Ascorbyl Glucoside, is a Vitamin C derivative which can penetrate the upper layers of the skin's surface and frequently used in anti-wrinkle skincare products. It acts as a powerful antioxidant that works well with other replenishing and antioxidant ingredients to further improve the skin radiance, creating a smoother, clearer and more invigorated looking.  

Hyaluronic Acid
This fast-absorbing form of Hyaluronic Acid is known for its ability to hold up to 1,000 times its weight in water. Acting like a sponge, it draws moisture into skin’s surface layers and expands as it absorbs. Hyaluronic Acid is known to help smooth and plump fine lines and is commonly used in skincare products intended to visibly reduce facial lines and refine texture. 

Visit our Skincare Ingredient Glossary for more information on ingredients.

ALL KIEHL'S PRODUCTS ARE:

• 100% Paraben-Free^

• 100% Micro-Plastic free

• 100% of Formulas utilise Green Chemistry

• 98% of Formulas contain 3 Renewable Raw Materials  

• Kiehl’s does not test any of its products or any of its ingredients on animals, nor ask others to test on our behalf, except when required by law

WHAT'S NEXT?
Discover our other anti-wrinkle formulas like our anti-aging face cream and efficacious eye serum.

DID YOU KNOW?
Kiehl’s became pioneers in Vitamin C skincare when we first stabilized Vitamin C in our efficacious, water-free concentrate. Our patented Vitamin C serum is highly stable ensuring that our formula is concentrated with an efficacious amount of Vitamin C while still being suitable for sensitive skin. Within our formula, our Vitamin C penetrates skin’s deeper surface layers—up to 10 layers deep!

^We no longer produce any paraben formulas (and have not since 2020). Due to the nature of these changes, there was a mix of both formulas in global supply chains during the transitionary period and some places, including Australia, may have paraben stock remaining. Please check your product’s physical ingredients label to assess suitability. We offer free returns on unopened purchases.