Antioxidant

Glycine Max Leaf Extract

INCI: GLYCINE MAX LEAF EXTRACT

Reviewed by Emma · Last updated 2 Jun 2026

Also known as: Glycine Max Leaf Extract

A plant-derived antioxidant that may help calm inflammatory skin conditions

Best For Skin Types

All, Sensitive, Combination

Addresses

Redness, Sensitivity, Barrier repair, Oxidative stress

Usage Frequency

Daily

What Is Glycine Max Leaf Extract?

Glycine Max Leaf Extract is derived from soybean leaves and contains bioactive compounds including isoflavones, allantoin, and alpha-hydroxy acids. These naturally occurring substances have been used traditionally in skincare and are now incorporated into modern formulations for their antioxidant and skin-conditioning properties.

The extract functions primarily as an antioxidant and skin protectant, helping to defend against environmental stressors whilst supporting the skin's natural barrier function.

Benefits for Your Skin

How It Works

The extract contains isoflavones and other polyphenolic compounds that act as free radical scavengers, reducing oxidative damage to skin cells. Additionally, research indicates it may modulate inflammatory signalling pathways—specifically JAK/STAT signalling—which is involved in conditions characterised by excessive inflammation.

The presence of allantoin and alpha-hydroxy acids contributes to skin conditioning and barrier repair, whilst the overall composition supports the skin's natural defence mechanisms against environmental aggressors.

Clinical Evidence & References

Research on wild soybean leaf and stem extract suggests potential benefits for inflammatory skin conditions. In laboratory and animal models, the extract demonstrated effects on inflammatory markers associated with atopic dermatitis, including reduced expression of inflammatory cytokines and improved skin barrier function measured through reduced transepidermal water loss.

However, most evidence comes from in vitro and animal studies rather than extensive human clinical trials. A cosmetic ingredient safety panel assessed soy-derived ingredients and concluded that soy leaf extract is safe as used in cosmetics, though further human data would strengthen confidence in its efficacy claims. The mechanism appears plausible, but real-world effectiveness in typical formulation concentrations requires more investigation.

How to Use

Glycine Max Leaf Extract is typically used as part of a broader formulation rather than as a standalone active. It works well within serums, moisturisers, and soothing treatments. There is no specific timing required, and it can be incorporated into both morning and evening routines. It pairs well with other antioxidants and barrier-supporting ingredients.

Safety & Precautions

Soybean-derived cosmetic ingredients, including leaf extract, have been assessed as safe for use in cosmetics at typical concentrations. Those with known soy sensitivity should check full ingredient lists, though topical use is generally well-tolerated.

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