I’d like some advice please on using eco-friendly colours for my screen printing. I mainly print on fabric, I have 55T frames and, until now, I’ve always bought Textprint Mono water-based colours. I have a few questions: In your opinion, which inks are best? Do they need a catalyst? Does the colour tend to fade from the fabric after several washes? Is the neutral colour with coloured pigments to be added the only possibility available? Is it possible to obtain bright colours or are the colours you obtain always “pastel”? How much colour can I get from one pot of pigment?

Biobase colours ( https://world.cplfabbrika.com/screen-printing/screen-printing-inks/biobase-eco-friendly-inks.html ) actually have many advantages, which I’ll list below, but they also have one big disadvantage: they can’t be used on fabric, because they don't strongly adhere to the fabric and therefore run when washed.

These are the advantages of Biobase colours:

• they are genuinely non-toxic, since they contain substances normally used in food production
• they can easily be washed off with water if they dry on the screen
• 14 different colours are available which can be mixed together
• they can be used to print on frames up to 90T, so even grey scales can be printed to a high definition
• they leave a substantial layer on the sheet, it’s therefore very “tactile”.
  Unfortunately, however, we can only enjoy these benefits if we print on paper, cardboard or natural wood.

To print on fabric, you can continue using Texprint Mono, or any other water-based ink that requires hot drying.