Hyaluronic Acid


This molecule is a humectant meaning that it helps retain moisture, Hyaluronic Acid is a trusted skincare ingredient in hydrating formulas known to help smooth and plump skin.

What Is Hyaluronic Acid?

The name "Hyaluronic Acid" comes from the Greek word, "Hyalos" which means "glass." "Uronic" is a term for a sugar that is found in the molecule. Hyaluronic Acid was first used in skincare in the 1960s, but was incorporated into a large assortment of cosmetic and skincare formulas starting in the 1990s. It’s easily one of the most popular hydrating ingredients in skincare, thanks to its ability to work in a wide variety of formulas and with an array of other skin-healthy ingredients and extracts.

What Is Sodium Hyaluronate?

Sodium Hyaluronate is the sodium salt of Hyaluronic Acid. It is known to be a moisturizing agent, viscosifier and emulsifier. Within our formulas, Sodium Hyaluronate helps hydrate, replenish and refine skin texture.

Why Is Hyaluronic Acid So Good For Your Skin?

Hyaluronic Acid helps replenish skin to boost hydration and improve skin’s elasticity. Since it is already naturally occurring in skin, it is highly compatible with skin making it a trusted and effective skincare ingredient. As you age, Hyaluronic Acid levels decrease and adding a moisturizer or face serum with Hyaluronic Acid can help plump and hydrate skin.

What Does Hyaluronic Acid Do?

As a humectant, Hyaluronic Acid draws moisture into the skin and helps maintain moisture levels to visibly smooth and plump skin for ultimate hydration. In addition to boosting hydration, Hyaluronic Acid benefits skin by helping to immediately smooth rough surfaces, provide a protective layer to help skin retain moisture, and improve skin’s elasticity.

Is Hyaluronic Acid Good For Wrinkles And Fine Lines?

Skin loses moisture and Hyaluronic Acid with age which can cause skin to become dehydrated. When skin is dry or dehydrated, fine lines, wrinkles and rough texture are often more visible. Using hydrating products with Hyaluronic Acid can help visibly improve lines and wrinkles for smoother, younger-looking skin.

Is Sodium Hyaluronate The Same As Hyaluronic Acid?

Sodium Hyaluronate is actually a form of Hyaluronic Acid. Like Hyaluronic Acid, it works as a moisturizing agent within skincare formulas to help replenish, hydrate and refine skin’s texture. Kiehl’s also formulates some products with Sodium Hyaluronate Filling Spheres which are actually dehydrated molecules which contain Hyaluronic Acid. These spheres rehydrate and absorb water within skin’s surface to help plump and smooth.

What Is Fragmented Hyaluronic Acid?

Fragmented Hyaluronic Acid is a form of Hyaluronic Acid that is in tiny pieces that are more easily able to penetrate the surface layers of skin.

What Skin Type Should Use Hyaluronic Acid?

Every product with Hyaluronic Acid is different so it is important to look for formulas for your skin type and skin needs. Hyaluronic Acid by itself is a lightweight molecule so it can be an effective ingredient in formulas for oily skin. While oily skin may feel greasy, it can actually be dehydrated (lacking in water) and need the moisture boost of a lightweight hydrator. Products with Hyaluronic Acid are often beloved by dry and dehydrated skin types who benefit from hydrating and moisturizing formulas to plump and smooth skin with moisture.

Can Hyaluronic Acid Benefit Your Hair?

While Hyaluronic Acid is a trusted skincare ingredient, it also has moisturizing properties for your hair and scalp. Within hair care formulas, Hyaluronic Acid hydrates hair and helps it retain moisture for a smoother and softer appearance. After treating your skin to the benefits of Hyaluronic Acid, add it into your hair care routine with Kiehl’s Damage Repairing & Rehydrating shampoo, conditioner, and leave-in treatment.

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Powerful-Strength Vitamin C Serum
A potent Vitamin C serum formulated with 12.5% Vitamin C and Hyaluronic Acid.

Total: $68.00

Multiple Sizes
Customer Review Rating 4.5 of 5 834 reviews

Total: $22.00 - $108.00

Powerful-Strength Dark Circle Reducing Vitamin C Eye Serum
A dark circle eye cream formulated with Vitamin C that helps visibly reduce blue and brown dark circles.

Total: $50.00

15 ml
Customer Review Rating 4.3 of 5 620 reviews

Total: $50.00

Super Multi-Corrective Cream
An anti-aging facial cream that helps visibly reduce wrinkles and fine lines.

Total: $85.00

Multiple Sizes
Customer Review Rating 4.5 of 5 247 reviews

Total: $65.00 - $85.00

Vital Skin-Strengthening Hyaluronic Acid Super Serum
A Hyaluronic Acid serum with an Adaptogenic complex that strengthens skin and boosts radiance.

Total: $52.00

Multiple Sizes
Customer Review Rating 4.4 of 5 640 reviews

Total: $52.00 - $135.00

Super Multi-Corrective Eye-Opening Serum
A powerful firming eye cream for crow’s feet and under eye wrinkles.

Total: $50.00

Multiple Sizes
Customer Review Rating 3.7 of 5 83 reviews

Total: $50.00 - $78.00

Iris Extract Activating Treatment Essence
An anti-aging facial essence formulated to reactivate skin’s youthful appearance.

Total: $45.00

6.8 fl. oz. Bottle
Customer Review Rating 4.6 of 5 72 reviews

Total: $45.00

Damage Repairing & Rehydrating Conditioner
A hydrating conditioner for damaged hair.

Total: $21.00

6.8 fl. oz.
Customer Review Rating 4.2 of 5 26 reviews

Total: $21.00

Damage Repairing & Rehydrating Leave-In Treatment
A leave-in treatment for damaged hair.

Total: $25.00

2.5 fl. oz.
Customer Review Rating 3.9 of 5 36 reviews

Total: $25.00

Damage Repairing & Rehydrating Shampoo
A hydrating shampoo for damaged hair.

Total: $20.00

8.4 fl. oz.
Customer Review Rating 4.2 of 5 38 reviews

Total: $20.00