On washable fabrics act immediately by dabbing with methylated spirits then wash in a detergent solution. Dried shellac may be softened by wetting it with methylated spirits but the meths. Shoe polish Scrape off surplus. Dab with white spirits to dissolve any remaining particles. Remaining stains can be treated with methylated spirits and finally rinsed well with clean water and blotting dry.
Washable fabrics use a few drops of ammonia in the washing water.
Heavy marks will have to treated with white spirit before starting above washing. Dab with eucalyptus oil or Swarfega hand cleanser holding a paper towel or an absorbent cloth on underside of fabric, repeat as needed. Launder as usual. Hot water will set the stain. Non-washable fabrics must be dry cleaned by a good cleaner.