They took a porous dry film and attached a mix of structures called zwitterions, which have been used successfully to prevent bacteria stickiness in bloodfiltering and other applications.
But when chemicals are applied on your skin, they are absorbed straight into your blood stream without filtering of any kind, and no protection against the toxin.
Depending on the severity of your anemia, a blood transfusion or plasmapheresis may be necessary. Plasmapheresis is a type of blood-filtering procedure.