This is because all water-based materials have been removed and replaced with bake & cake friendly oils; these oils mix through much better than water-based gels (which we know water repels from the oils in your baking).
Edible Food Colouring Mill Red Oil Based 100ml Cake Decorating Sugarcraft
Edible Food Colouring Mill Red Oil Based 20ml Cake Decorating Sugarcraft
Colour Mill Oil Based Food Colouring Red - Next Generation Oil Based Food Colouring for Baking, Decorating, Icing and Cooking Food Dye DIY Slime and Crafts - 100 ml
Colour Mill Oil Based Red 20ml - Next Generation Oil Based Food Colouring for Baking, Decorating, Icing and Cooking Food Dye DIY Slime and Crafts 20ml
PME Cake Oil Based Food Colour with Precision Dropper | Red (20ml) | High Pigment Oil-Blend Food Colouring for Buttercream Chocolate Ganache Fondant & Cake Batter
Colour Splash Oil Based Food Colour | Bright Red | Vibrant Edible Colour For Baking, Colours Buttercream, Cake Mix, Chocolate - 30ml