The present invention is directed towards a method for preparing and/or treating a fluid and/or moister absorbing basic material (1), illustrated as a textile soft material, to form an allergen or allergens impregnated material (2). It is here suggested a first processing step (S1), for the production of said absorbing basic material (a1), one or more intermediate processing steps (S2), for a sequential treatment of said basic absorbing material (1), including a first step (S2a) of adding one or more diluted antigen or antigens (5) to said dried absorbing basic material (1) in an extent to be fully absorbed by said material (1) and a second step (S2b) where said diluted antigen or antigens, within said absorbing basic material (1), and said material (1) is treated during an under-pressure sequence followed by an over-pressure sequence, or vice versa and, a final processing step (S3), where said treated absorbing material “a2”, with diluted antigen or antigens (5), is dried (S3a) in order to form an allergen or allergens impregnated soft material (2).
