You will need:
Melt the clear MP soap in either a microwave or on a stove top
Mix the Titanium Dioxide with a very small amount of really hot water till its a smooth paste
Add paste to melted soap and stir with a hand whisk gently until mixed
Spritz with alcohol to remove bubbles, pour into mould, spritz again
The soap is now ready to use OR you can leave to cool and harden and use another day. Just remember to cover with plastic wrap to keep moisture away.
You can always add colour to the white soap using micas