Ingredient guide
Brassicyl Isoleucinate Esylate
brassicyl isoleucinate esylate
In short
An amino‑acid‑derived lipid designed to mimic the skin’s natural barrier structure. Early research suggests it helps skin hold moisture more effectively.
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What it is
Amino-acid-derived lipid that forms lamellar structures resembling the stratum corneum intercellular matrix. Designed to reinforce barrier architecture. Early studies suggest improved moisture retention in barrier-compromised skin.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- Brassicyl Isoleucinate Esylate
- Moisturise
- SPF
Also found as
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Where to find it
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Paula's Choice Barrier Repair Advanced Moisturizer
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Common questions
What does Brassicyl Isoleucinate Esylate do for skin?
It supports barrier structure by forming lamellar layers similar to those in the outer skin, helping skin feel more comfortable and moisturised.
Is it good for dry or sensitive skin?
Yes. Its barrier‑supporting nature makes it a good match for dryness or easily disrupted skin.
Is the research strong?
Evidence is still emerging, but early data supports improvements in moisture retention.
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Personal guidance, not medical advice.