Poloxamer 338
What Poloxamer 338 is & what it does
Poloxamer 338 is a synthetic block copolymer of polyoxyethylene and polyoxypropylene, part of the poloxamer family of nonionic surfactants. In cleansers and other water-based formulas it works as a mild surfactant and solubilizer, helping disperse oils and keep ingredients evenly mixed. Its gentle cleansing and emulsifying behavior makes it useful in low-irritation products.
What does Poloxamer 338 do in skincare?
It is a mild nonionic surfactant and solubilizer used in water-based products. It helps disperse oils, keep ingredients evenly mixed, and supports gentle cleansing in low-irritation formulas.
Is Poloxamer 338 safe?
Poloxamers are widely used surfactants generally regarded as mild and well tolerated in cosmetics. As with any cleansing or surfactant ingredient, individual tolerance can vary, so patch testing is wise if your skin is sensitive.
Is Poloxamer 338 natural or synthetic?
It is a synthetic ingredient, a manufactured block copolymer of polyoxyethylene and polyoxypropylene. It does not occur in nature and is produced industrially.
Sunscreens with Poloxamer 338
We rate 17 sunscreens that contain it, showing the top 10 by overall score:
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La Roche-Posay Anthelios Uvmune 400 Oil Control SPF50+
93/100
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La Roche-Posay Anthelios Age Correct SPF 50+
91/100
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Mixa Solaire Peau Sensible SPF50 Hyaluron Protect SPF 50
88/100
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Garnier Ambre Solaire Anti-Age Super UV Spf 50
83/100
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La Roche-Posay Anthelios Age Protect Cream SPF 50
83/100
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SkinCeuticals Oil Shield UV Defense Sun Cream SPF50
82/100
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La Roche-Posay Anthelios Age Correct Daily Care Spf50
79/100
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La Roche-Posay Anthelios Age Correct
79/100
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Vichy 3-In-1 Matting Sun Care Spf 50+
79/100
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La Roche-Posay Anthelios Age Correct - CC Cream With Anti-age Effect SPF 50
78/100