You edit custom formulations in the formulation editor page by adding or removing ingredients to the formulation.
At the top of the page is the formulation Name edit box. A new formulation will have a name like “[copy] 100C” or “[NEW FORMULATION]” depending on whether the custom formulation was created from scratch or by copying an existing color.
You should change the formulation name to something more memorable for you. When you tab away from the edit box, your new name will be saved.
Below the formulation name is a dropdown list of available ingredients. The list of ingredients will contain the ingredients for the currently-selected ink family along with any other ingredients or additives that are available for use in formulations.
To change the amount of an ingredient in the formulation, select the ingredient from the dropdown list and enter an amount in the edit box. Then click one of the three icons next to the amount box:
You can remove an ingredient from the formulation by clicking the minus icon
next to the ingredient, or by changing the amount of the ingredient to a value less than or equal to zero.
Changes to your custom formulations as soon as you make them.