Hi everyone! I've been making soaps for a few months. I made a soap for a baby shower. I've attached a picture. The top of the soap is a clear glycerin base and I used mica powder to color it. It was a beautiful dark blue, as you can see. Two weeks later, the color has completely faded and disappeared and they have all turned clear! I've searched all over and have NO clue what is causing this. Any ideas, suggestions or help is greatly appreciated! Thanks in advance.