Best Non Toxic Mascara (2025)

Mar 25, 2023 | Non Toxic Makeup

Last Updated on August 17, 2025 by NonToxicSwaps

Switch to a non toxic mascara to eliminate harmful chemicals from your makeup bag!

Toxic Ingredients to Avoid in Mascara

Mascaras often include toxic ingredients that are classified as irritants, have contamination warnings, or are straight up carcinogenic.

These toxic ingredients are often included in mascaras:

  • Butylated compounds (BHA/BHT): linked to endocrine disruption at high doses, developmental & reproductive toxicity (PubChem CID: 31404); BHA is a known carcinogen, developmental & reproductive toxin (PubChem ID: 24667)
  • Parabens: preservatives linked to endocrine disruption (PMID: 29596967), known to be carcinogenic due to endocrine disruption (PMID: 36746253) Parabens may be listed as methylparaben, ethylparaben, propylparaben, butylparaben, isobutylparaben, isopropylparaben, and benzylparaben.
  • Dyes: can be carcinogenic, genotoxic and offer no benefit to the product other than color (example: Red 40, Blue 1, Yellow 5) (PMID: 23026007)
  • Phenoxyethanol: deemed generally safe at a 1% concentration, however it’s production process, ethoxylation, can potentially contaminate phenoxyethanol with 1,4-dioxane and ethylene oxide (see above for ethoxylated ingredient description) (PubChem CID: 31236)
  • Propylene glycol: penetration enhancer (PMID 31786711), bioaccumulative, can impact the nervous system (PMID: 25762872)
  • Potassium sorbate: skin, eye, respiratory irritant, (PubChemID: 23676745); caused DNA damage when combined with ascorbic acid and Fe-salt (PMID: 12176085) and deemed genotoxic to human lymphocytes by this study (PMID: 20036729)
  • Sodium benzoate: study has shown to be mutagenic and cytotoxic in lymphocytes (PubChem ID: 517055); can form benzene when combined with ascorbic acid (Vitamin C) (PMID: 33371618)
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