Hi everyone, I am in the UK and new to soap making and I am really excited to start making my own soaps. I have M&P clear and white bases from Stephensons and would love to add some colour to the soaps. I am a little confused about how to use colour. I have found glycerine mixed pigment and ask some diluted in deionised water. How or which colour is used for what soap base. Also, when using the colour thats diluted in deionised water, does it mean I ll have to add preservatives to the soap due to adding water element to the base? Thanks in advance for your advise.