HomeBlogEssential Oil Quality: How to Spot Pure vs Adulterated Safety Essential Oil Quality: How to Spot Pure vs Adulterated Last updated: April 20, 2026 This article is being written by our team. Check back soon — 215 articles are planned for this site and we're publishing weekly. In the meantime, you might enjoy: Take the Oil Finder Quiz Browse our buying guides Explore the oil encyclopaedia