Probably the first transfer paint made available to the individual textile artist and crafter, these paints have changed little over time.
Derived from Disperse Dyes, this type of paint was developed decades ago to print onto the 'new' synthetics. As synthetic fibres are non-porous (so would not absorb other water-based fabric paint) this technique of heat-transfer was developed to embellish the fabrics with colour and pattern.
Transfer Paint should be painted onto copy or layout paper. Colours can be mixed and they can be applied any way you like - brush, sponge, stencil, spray etc etc. Colours will be dull and may be difficult to distinguish at this point.
Once dry, place paper face down onto synthetic fabric. Cover with baking-parchment and iron (no steam) with heat setting between wool & cotton for 1 or 2mins. The colour will be transferred to the fabric and will be strong and bright.
The fabric feels completely unaltered and it is now fully washable and dry-cleanable.
Can be used on fabric with up to about 40% natural fibre, but the resulting colour will be weaker.
Adding Colourless extender to any of the colours will make them less strong and so create 'pastel' shades.