One half of this mold was painted with blue food color so that the Glass Release Spray or the ZYP Aerosol can be seen. You will be able to see how thick and where you are covering the mold. The blue color will burn away and the mold will be white again. Do not mix food color with the water-soluble Glass Release Spray. The food color contains propylene glycol which will change the consistency of the liquid, making the sprayer clog. Here is a video on how to spay the mold and use food color to help you judge how much and where you are spraying: YouTube Video on How to Coat a Mold
Read more about ZYP Aerosol Lubricoat
Read more about BN Glass Release
Link to PDF for Special Information
See Video on painting mold with food color