I was ask to created a quick mockup of what these two images would look like if it looked as if the guy is splashing his face with the neurons.
So, very quickly, within 3 minutes i did a blend mode adjustment to remove the dark tones from the neurons image:
Next i used the warp option under transform to give the neurons the same shape the water takes from the motion the model is doing. Plus applying a soft light blending more. And here is where we would be:
Now, here is where i had to stop since in order to finalize this so it looks real we would need to remove the water which would require some time with the smart content fill options, heal brush and so on ( and you might as well buy the images since this is all low res comp images). But i think this was great for keeping it fast for a mockup.