Ingredient guide
Soy Unsaponifiables
INCI name · 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.
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.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- Soy Unsaponifiables
- Moisturise
- SPF
Also found as
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Check an ingredient listCommon questions
What do Soy Unsaponifiables do?
They supply barrier-supporting sterols and lipids that can help skin look smoother and more elastic over time.
Who might like Soy Unsaponifiables?
They’re well-suited to dry or sensitive skin seeking gentle nourishment and a more supple feel.
Where are Soy Unsaponifiables used?
They appear in richer moisturisers and firming-style formulas that emphasise comfort and barrier support.
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Personal guidance, not medical advice.