How long after my final microneedling treatment do I have to wait before I can start scalp micropigmentation?

I have had 4 microneedling treatments on my scalp to reduce the appear of a scar. I now plan on getting scalp micropigmentation which is semi permanent tattoo, and also thinking of getting scar camouflage tattoo (medical tattooing). How long after my 4th and final microneedling treatment will I have to wait, not just until my skin is healed, but to ensure it has no effect on the scalp micropigmentation/scar camouflage tattooing results? Thanks