Ingredient dictionary

Phytosphingosine

Phytosphingosine is a skin-identical building block for ceramides, the lipids that help hold the skin barrier together. Its main job is skin conditioning. It is on the label of 43 products in our library. Checked against our library November 6, 2026.

The catch: none for most people; check the full product list if your skin reacts easily.

What Phytosphingosine does

Supports the skin barrier
Helps skin hold on to moisture
Helps skin feel smooth and soft

Phytosphingosine is a sphingoid base, a natural building block found in human skin. Skin cells use bases like it to build ceramides, the fatty lipids that form the outer layer of the skin barrier. Cosmetic phytosphingosine is usually made by fermentation or chemical synthesis.

Formulators use it to support the skin barrier and help skin feel smooth and comfortable. It is a common choice in cleansers, moisturizers, and baby products. It blends into creams, lotions, and washes without much fuss.

Good for

Suits dry or sensitive skin, and is common in gentle cleansers, moisturizers, and baby lotions.

Be careful if

Nothing in particular for most skin types.

Frequently asked questions

Is phytosphingosine safe for sensitive skin?

Phytosphingosine is generally well tolerated and appears often in baby lotions and everyday moisturizers. Everyone reacts differently, though, so try a small patch on your inner arm first if your skin reacts easily to new products.

Is phytosphingosine the same as ceramide?

Not exactly. Phytosphingosine is the base part of a ceramide. When a fatty acid joins it, the result is a ceramide. Formulas often include it to give skin a building block for its own barrier lipids.