Grabs onto metal ions in water that would destabilize the formula. Keeps your product from going bad or changing color.
Removes Metal Ions
Binds metal ions
Traditional Use
Synthesized in the mid-20th century as a chelating agent. Developed to prevent mineral deposits and oxidation in cosmetic formulations, improving product stability.
EWG
4
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
1.5%
0%2%
Reg. Limit
EU regulatory limit: 1.5%. (a) 1.5% (as etidronic acid) (b) 0.2% (as etidronic acid) Source: EU Cosmetics Regulation (EC) 1223/2009, Annex III (Restricted Substances), Entry 53.