The Beauty & Personal Care Brand Builder Series

Ingredient Deep Dive

Phytosterols

The Beauty & Personal Care Brand Builder Series

Ingredient Deep Dive

Phytosterols

The Barrier-Identical Plant Sterols

Phytosterols are plant-derived sterols closely related to the cholesterol in skin’s own barrier — making them excellent barrier-supporting and soothing lipids.

They help reinforce the look of a healthy moisture barrier, calm the appearance of stressed or reddened-looking skin, and soften and condition.

Quick Insights

Ingredient Rating:

GOOD

Type of Ingredient:

Barrier Support and Soother

Intended Function:

Barrier-identical plant sterols used to support the moisture barrier and soothe the look of skin.

Common Applications:

Used across moisturizers, serums and lotions and treatment formulas.

Target Audience:

Brands building barrier-repair and soothing, sensitive-skin formulas.

Also Known As:

Phytosterols, Plant Sterols

Benefits of Phytosterols

Barrier-identical plant sterols that support the barrier and soothe the look of skin.

Barrier Support: Cholesterol-like sterols help reinforce the look of a healthy barrier.
Soothing: Help calm the appearance of stressed, reddened-looking skin.
Softening: Condition and smooth the skin surface.
Skin-Identical: Structurally similar to the skin’s own sterols.
Naturally Derived: From plant oils such as soy and shea.

How It Works

Phytosterols mimic the cholesterol that, alongside ceramides and fatty acids, builds the skin’s barrier; slotting into this lipid matrix, they help support a resilient-looking barrier and calm the visible signs of stress and redness at the surface.

Formulating with Phytosterols

Phytosterols are used in the oil phase at low levels as a barrier-supporting, soothing lipid, often alongside ceramides and fatty acids. Observe good manufacturing and preservation practice.

Safety Analysis

Phytosterols are well tolerated as skin-identical lipids. As always, substantiate the finished product’s safety (e.g. patch / HRIPT testing) in line with MoCRA requirements.

References

https://incidecoder.com/ingredients/phytosterols

https://cosmeticanalysis.com/cosmetic-ingredients/phytosterols

https://en.wikipedia.org/wiki/Phytosterol

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