Hi there @AnnyT228,
You will need to combine the logic into a single material.
Assuming this is a simple color with the logic done in the opacity / opacity mask, you should be able to achieve this effect with a simple add node.
That being said, you mentioned that one of these effects (I’m guessing the left) is an opacity mask. Well, the default cutoff value for an opacity mask is 0.333, so we’ll need to account for that in the material.
Let me know if you have any troubles with this. If you could share the actual material graphs, I can better help you combine the effects.