Fragrance avoidance
Not a strong fit for fragrance avoidance because it carries Fragrance.
The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.
CAS 2809-21-4 · 70/100 · High conf.
Chelating agent · Corrosion inhibitor · Fragrance
Concern score
(1-Hydroxyethylidene)diphosphonic acid and its salts is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.
RestrictedEU EC — restricted
The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.
Restrictions first, then routine listings from published regulatory sources.
EUEC
Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Product types: (a) Hair product (b) Soap Maximum concentration: (a) 1.5% (as etidronic acid) (b) 0.2% (as etidronic acid)
No graded sources yet for Etidronic acid. We publish evidence only once a source is linked and reviewed — this ingredient is in the catalog, but has not been assessed.
Context-specific fit derived from published classifications and the current ingredient evidence profile.
Fragrance avoidance
Not a strong fit for fragrance avoidance because it carries Fragrance.
The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.
Prevalence of Etidronic acid in our catalog (epa_cpdat).
Products
634
Brands
6
Typical roles
Ingredients that frequently appear alongside Etidronic acid in the catalog.