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Ingredient guide
glycine soja unsaponifiables
In short
Soy Unsaponifiables are the nutrient-rich fraction of soybean oil containing phytosterols and supportive lipids. They help reinforce the skin’s barrier and promote a smoother, more elastic look.
Reviewed against published evidence · editorially independent · no brand pays for placement
Works for
Barrier · Firmness
Skin type
Dry · Sensitive
Best used
Anytime
What it is
Non-saponifiable fraction of soybean oil; concentrated in phytosterols including sitosterol, stigmasterol, and campesterol alongside isoflavone-associated lipids; supports barrier function and is used in premium anti-ageing formulas targeting firmness.
Also found as
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Common questions
They supply barrier-supporting sterols and lipids that can help skin look smoother and more elastic over time.
They’re well-suited to dry or sensitive skin seeking gentle nourishment and a more supple feel.
They appear in richer moisturisers and firming-style formulas that emphasise comfort and barrier support.
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Personal guidance only · For clinical concerns, see a dermatologist.