REF.001-DIRT ON SOFA
1st.-Dust abrasion.
The typical mark, which usually coincides on the sides of the sofa, caused by a scuff from a dirty shoe.
REF.003-DIRT ON SOFA
2º.-Dark door/window frames
Environmental dust, combined with moisture (sweat, saliva, ambient humidity...), creates these types of stains.
REF.002-DIRT ON SOFA
3rd.-Gloss marks
They appear on the arms, headrest, and, if it is a recliner sofa, on the leg area. Caused by body oils and the scalp.