Humectant

Sodium Ascorbyl Glucoside

INCI: SODIUM ASCORBYL GLUCOSIDE

Reviewed by Daisy · Last updated 2 Jun 2026

Also known as: Sodium Ascorbyl Glucoside

A stable vitamin C derivative that hydrates and conditions skin

Best For Skin Types

All, Dry, Sensitive, Mature

Addresses

Dryness, Hydration, Texture

Usage Frequency

Daily

What Is Sodium Ascorbyl Glucoside?

Sodium ascorbyl glucoside is a water-soluble form of vitamin C, created by combining ascorbic acid with glucose. This modification makes it far more stable than pure vitamin C, reducing the risk of oxidation and degradation that limits the shelf-life of other vitamin C formulations.

In skincare, it functions as both a humectant—drawing moisture into the skin—and a skin conditioning agent. The ingredient works to support the skin's hydration and overall appearance without the instability issues that make raw ascorbic acid challenging to formulate with.

How It Works

Sodium ascorbyl glucoside is a modified version of vitamin C designed to be more chemically stable and easier to formulate. Once in the product, it remains intact without breaking down quickly—a significant advantage over pure L-ascorbic acid, which degrades rapidly when exposed to air and light.

As a humectant, it attracts water molecules to the skin's surface, helping to maintain hydration levels. Its conditioning properties work to soften and smooth the skin's texture over time. The antioxidant component offers protection against oxidative stress, though the extent of this benefit may depend on how effectively the ingredient penetrates the skin barrier and the overall formulation design.

Clinical Evidence & References

Sodium ascorbyl glucoside has been assessed as safe for cosmetic use at current concentrations and practices. Research confirms its antioxidant and skin-conditioning functions, and its chemical stability makes it a reliable alternative to less stable vitamin C forms.

However, evidence on the depth of skin penetration and the clinical significance of its antioxidant effects in real-world conditions remains limited. While the ingredient shows promise for hydration and texture improvement, the strength of these effects may vary depending on formulation, concentration, and individual skin factors.

How to Use

Sodium ascorbyl glucoside is generally well-tolerated and can be incorporated into most skincare routines. It works effectively in serums, toners, and moisturisers. Since it is a hydrating ingredient rather than an active that requires specific timing, you can use it morning or evening as part of your regular skincare sequence. Layer it onto clean skin before occlusive products to maximise its hydrating benefits.

Safety & Precautions

Sodium ascorbyl glucoside is considered safe for cosmetic use at typical concentrations. It is suitable for most skin types and generally well-tolerated, though those with very sensitive or reactive skin should introduce it gradually.

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