Is Windsor and Newton flow improvement the same as rooftop. Can I use it for acrylic pours ??
The Flow Improver increases flow of colour, allowing the application of areas of flat colour, whilst maintaining stability. It slows drying and increases levelling.
It will be down to the viscosity of the medium and how fluid it is.
This may work but of you are looking for a pouring technique then dedicated pouring mediums are available. These are much more fluid ideal for pouring techniques.