Ingredient
PEG-40 hydrogenated castor oil
Worth watching
Some people do better without it. Worth swapping when you can.
What it is
A PEG surfactant, often on castor oil.
Why it’s used
Helps oil and water mix in washes and serums.
What to know
Worth watching. PEGs can carry impurities depending on how they’re made. Not the worst extra, not a treat.
Who should skip
Sensitive, broken skin.
A gentler swap
A simpler oil or a glucoside cleanser.
You’ll see it in
Shampoo, serums, fragrance mixes.