How do I check if a garment is colourfast?
It is important to check if the garment is colourfast before using any product in the Preen range. The best way to do this is by spraying a hidden part of the garment with your Preen product of choice and leave it for five to ten minutes. After this time check if the area has lost any colour and if so, the dyes used are not colourfast. Do not use any Preen product on garments that are not colourfast.
