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Ceteareth-6

What Ceteareth-6 is & what it does

Ceteareth-6 is a polyethylene-glycol ether of cetearyl alcohol, a synthetic nonionic surfactant and emulsifier. In sunscreens and creams it helps blend oil and water phases into a stable lotion and can act as a solubilizer for oily UV filters and fragrances. The number 6 refers to the average number of ethylene oxide units, which sets how oil- or water-loving the molecule is.

What does Ceteareth-6 do in skincare?

Ceteareth-6 is an emulsifier and surfactant that helps oil and water blend into a stable cream or lotion. In sunscreens it can also help dissolve oily UV filters and fragrances evenly through the formula. It is a functional ingredient that supports texture rather than an active.

Is Ceteareth-6 comedogenic or does it clog pores?

Ceteareth-6 is used at low levels as an emulsifier and is not generally singled out as a notably pore-clogging ingredient. Whether any product feels pore-clogging depends on the overall formula, not one emulsifier. If you are acne-prone, patch testing a new product is a reasonable approach.

Is Ceteareth-6 natural or synthetic?

Ceteareth-6 is a synthetic ingredient: it is made by reacting cetearyl alcohol with ethylene oxide. Although cetearyl alcohol can come from plant sources, the finished ethoxylated emulsifier is considered synthetic.

Sunscreens with Ceteareth-6

We rate 8 sunscreens that contain it:

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