I have been in rescue for years and truthfully wonder if there is such thing as a hypoallergenic cat.. maybe a sphynx.. if it has hair it could cause allergies. Siamese tend to cause the worst symptoms in most of my allergic adopters.. My husband is allergic to cats. He uses an inhaler at night and they can not sleep on our bed or touch his eyes. That said I rescued over 140 cats this year alone and have found homes for them so there is allergic and allergic... maybe keep a room that they sleep in that NO cats go in at all. Also they make cat whips you can use on the fur.. helps reduce the oils. I think.. there is no such thing as an allergy free cat.. dander is dander comes from the skin.. they all have some (amazing!). Good luck in your search however. Go to petfinder.com and see what you can spot out there.