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Shreveport, LA
A 26-year-old female asked:

The ingredient ceteareth 20 is in my hair conditioner, is it bad to leave this ingredient on my scalp? i heard it's a skin perpetrator.

1 doctor answer1 doctor weighed in
Dr. J. Lawrence Dohan
Dermatology 58 years experience
Penetrator: This is safe as long as there are no toxic contaminants. It is not toxic itself but facilitates absorption of various molecules deeper into skin. If it is a brand from an established company it should be safe.
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Last updated Mar 9, 2016

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