I believe your client’s sister is confusing irritations with allergies. They are two different things, but can have similar symptoms. Irritations are temporary skin conditions caused by substances that make the skin appear dry, flaky, or red and may cause itching.
Skin allergies are permanent reactions that usually become worse with each exposure to the allergy causing substance. Skin allergies start out looking like irritations, but if symptoms progress an allergy must be suspected. Only a qualified medical doctor can determine if an allergy exists.
Acetone and non-acetone removers are not likely to cause allergic reactions unless they contain fragrances or other ingredients that may trigger skin allergy. However, these solvents can dry and temporarily irritate the skin with prolonged and/or repeated contact. — Doug Schoon is vice president of science and technology for Creative Nail Design (Vista, Calif.).