Explanation
A hypoallergenic label does not guarantee that a cosmetic will cause no allergic reactions. Guidance from US and Canadian authorities rejects treating the term as a promise of universal tolerance.
The FDA says there is no federal standard or definition governing the term in the United States, and manufacturers do not have to submit substantiation of these claims to the agency. Health Canada explicitly warns that products labeled hypoallergenic can still cause allergic reactions.
The distinction is between a claim about reduced likelihood and a guarantee of zero risk. The label alone does not establish how a particular person will react, nor does it demonstrate that the product has passed a standardized FDA hypoallergenicity test.
Key takeaway
Hypoallergenic is not a guarantee of zero allergic reactions or proof of standardized FDA testing.