Kolourfix FF is used as an aftertreatment with Direct dyes to improve their washing fastness. While Direct dyes are very easy to use (just boil on with salt), they have poor washing and wet fastness and tend to wash out, fade and bleed when wet. Kolourfix FF helps stabilise and fix the colour after dyeing. Used at approx. 10-20g per litre in a warm dyebath 40-50 deg C for 15-20mins.
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Kolourfix FF is used as an aftertreatment with Direct dyes to improve their washing fastness. While Direct dyes are very easy to use (just boil on with salt), they have poor washing and wet fastness and tend to wash out, fade and bleed when wet. Kolourfix FF helps stabilise and fix the colour after dyeing. Used at approx. 10-20g per litre in a warm dyebath 40-50 deg C for 15-20mins.