Explanation
No. A 'hypoallergenic' label on a cosmetic sold in the United States does not guarantee that nobody will have an allergic reaction to it.
The FDA states that no federal standard or definition governs this term. Separately, the American Academy of Dermatology explicitly notes that a product described as hypoallergenic can still cause an allergic reaction.
A claim of reduced allergy potential is different from a guarantee of zero risk. These sources do not establish that every labelled product performs identically, or that all such products are ineffective. The regulatory explanation here applies specifically to the United States.
Key takeaway
'Hypoallergenic' is not a guarantee of zero allergic reactions.