If you have been making Bath Bombs for any length of time, then you’ve probably tried to make Purple by mixing Red 40 and Blue 1, and–congratulations–you made GRAY! It’s almost a right of passage. It seems every bath bomb maker has to go through this! But have you ever wondered why this happens? Afterall, … Continue reading STUDY IN PURPLE: Creating Custom Purple Color Blends for Bath Bombs by Robyn