Toothpastes can in rare cases cause allergic reactions due to the ingredients used, such as preservatives or fragrances. This is because the oral mucosa reacts differently from the skin. Even with an existing contact allergy, for example to nickel, the substance is usually tolerated on the mucous membrane. However, toothpaste also comes into contact with surrounding skin on the lips and around the mouth, so contact allergies may well occur there.
ECARF certified toothpastes have demonstrated in scientific tests that no side effects are to be expected from their use and a risk of developing a new allergy is unlikely. Despite meticulous product formulation and testing, allergic reactions or irritations cannot be completely ruled out in individual cases.
The manufacturers of allergy-friendly toothpastes must meet the following criteria for their product(s):