Powerful-Strength Line-Reducing Concentrate

All Skin Types, including Sensitive Skin

Vitamin C Serum Designed for Anti Aging Actions

Powerful-Strength Line-Reducing Concentrate

Powerful-Strength Line-Reducing Concentrate

Vitamin C Serum Designed for Anti Aging Actions

Old price New price $ 85.00

Select a Size

15 ml

50 ml

75 ml

100 ml

KIEHL'S REWARDS LOYALTY PROGRAM

Join Kiehl's Rewards (it's free!) and earn 85 points.
Learn More

NEED ADVICE?

Diagnose your skin with our online analysis tool

Diagnose your skin with our online analysis tool Scan Now | Connect 1:1 virtually with a Skincare Expert

Connect 1:1 virtually with a Skincare Expert

Book Now

What It Is

Anti aging action made easy with Kiehl's. Introducing a vitamin c serum made to do it all: boosts radiance, firms skin and visibly diminishes fine lines, wrinkles and pores for smoother-looking skin. Formulated with 10.5% L-Ascorbic Acid and 2% Ascorbyl Glucoside plus Hyaluronic Acid, this patented, water-free concentrate is a Kiehl’s customer favorite.

What It's Good For

Helps with anti aging action, such as reducing lines and wrinkles while helping firm skin over time
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
Formulated for all skin types, including sensitive skin

How it’s made better — • Formulated without: Parabens, Mineral Oil, Water, Alcohol and Dye

• Renewable Ascorbyl Glucoside

• Up to 100% recycled plastic packaging

Before and After Using our Powerful-Strength Line-Reducing Concentrate

Activate youth with clinically proven results:

Instantly: Boosts radiance*
In 2 weeks: Visibly reduces fine lines*

*Results based on 8-week clinical study with 51 women

Key Ingredients

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.

VITAMIN Cg

Vitamin Cg, or Ascorbyl Glucoside, is a Vitamin C derivative that activates once absorbed into the upper layers of the skin’s surface. With antioxidant benefits, this form of Vitamin C is frequently used in anti-wrinkle skincare products to help reduce facial lines over time.

FRAGMENTED 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 and is commonly used in skincare products intended to visibly reduce facial lines and refine texture.

See full list

How to Use

Ensure entire face is cleansed prior to application
Apply Vitamin C serum over entire face, avoiding the eye area
As it blends into skin, you may experience a feeling of warmth as the formula activates
For morning and evening use, post cleansing and toning and before your moisturizer
Be sure to avoid the eye area; in case of contact with eyes, rinse them immediately

Discover our other anti-aging formulas like our nighttime facial oil and our eye cream with Pro-Retinol

Did You Know?

Kiehl's is no stranger to the powers of vitamin c. 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!

The truth about vitamin C

Find out the skin-benefiting facts about Vitamin C. **LEARN MORE**

Future Made Better

True to our founding family’s mission, we strive to improve the quality of the communities we serve by reducing our
environmental impact, formulating responsibly, and supporting charitable causes. This formula is made with: