n'-nitrosonornicotine (nnn) and 4-(n-nitrosomethylamino)-1-(3-pyridyl)-1-butanone (nnk)
Severity 10/10cosmetic ingredient
Is n'-nitrosonornicotine (nnn) and 4-(n-nitrosomethylamino)-1-(3-pyridyl)-1-butanone (nnk) safe?
n'-nitrosonornicotine (nnn) and 4-(n-nitrosomethylamino)-1-(3-pyridyl)-1-butanone (nnk) carries significant published concerns (cancer concern).
Documented concerns
Cancer concern
10/10Classified by IARC Group 1.
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