Essentials

Why it’s rated Use Caution

A product’s rating follows its most concerning indexed ingredient. Each ingredient links to its science card and the research behind it. How ratings work

• Cosmetic Preservatives (Mild) Milder preservatives; limit rather than avoid.
  Use Caution
• Propylene Glycol Penetration enhancer; can irritate sensitive skin.
  Use Caution
• EDTA (Disodium / Tetrasodium) Penetration enhancer; poorly biodegradable.
  Use Caution
• Synthetic Fragrance / Parfum Undisclosed scent blend. A practical allowance: on its own it rates Caution (limit use), not Avoid — products with other flagged ingredients are still rated by those.
  Use Caution
• Baking Soda Sodium bicarbonate — no concern.
  Clean
• Water Plain water — no concern.
  Clean