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Homosalate vs Calcium Disodium EDTA: which is worse?

Quick answer: Both score equally on our risk model. Homosalate is restricted in the EU and allowed in the US; Calcium Disodium EDTA is in the EU and in the US.

PropertyHomosalateCalcium Disodium EDTA
EU statusRestricted
US statusAllowed
Risk levelmedium
Banned in
Restricted inEuropean UnionEuropean Union (restricted to specific food categories; not approved for many applications permitted in US)
Categoryuv filteradditive
Where it hidessunscreen, SPF moisturizer, SPF foundation

What is Homosalate?

Homosalate is an organic UV filter that absorbs UVB radiation.

What is Calcium Disodium EDTA?

Calcium disodium EDTA (ethylenediaminetetraacetate) is a chelating agent used as a food preservative. It binds metal ions (particularly iron and copper) that would otherwise catalyze oxidative and color-degradation reactions in foods. It prevents color loss, flavor changes, and bacterial growth in certain foods.

Documented risks

Homosalate: A suspected endocrine disruptor; the EU limits it to 7.34% in face products (2025), well below typical US concentrations.

Calcium Disodium EDTA: EDTA chelates essential minerals including zinc, iron, calcium, and magnesium in the gut, potentially reducing absorption of these nutrients with regular consumption. Animal studies at high doses show reproductive toxicity and zinc deficiency effects. EFSA's safety assessment noted that EDTA could reduce zinc bioavailability at consumption levels that could be reached by high consumers of EDTA-containing foods. The ADI is 1.9 mg/kg body weight. EDTA's poor biodegradability also makes it an environmental concern — it accumulates in water supplies and can mobilize heavy metals in sediments.

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