How to Make Turing (Reaction Diffusion) Patterns in Photoshop

Hello Guys, Here I am back with another tutorial, I’ll show you quick and easy ways to make Turing Pattern. This is not my original idea or technique. First, I look at this pattern in Pinterest and wondering how can I make it. I search on google, and I find this pattern called Reaction-Diffusion pattern or Turing Pattern And finally, I find two tutorials related. First from Andrew Werth