Can some explain what this "adjustment" is about to avoid fading?

Scalp micro pigmentation after about two weeks, after each procedure the pigment has vanished. I understand there are immune system issues and post care op is critical. I have followed the post op care flawlessly. Some professionals have commented that the process needs to be "adjusted" to ensure that fading and vanishing of pigment does not happen again. Can some explain what this "adjustment" is about? The upshot is that this proves costly. For no real result or return. Not a happy client.