I will be making some Melt&Pour soap bars (and possibly one Cold Process soap too) in the forthcoming weeks and I was trying to get my head around the behaviours of soap colourants in different soaping processes. Some of them are alkali-resistant while some of them are not, some can bleed through soap layers but some don't... I now have a fairly good number of colourants (liquid dyes, micas, oxides and ultramarines) and I keep forgetting which, among them, is suitable for Cold Process soap making, which works better in Melt&Pour and which, on the other hand, gives great results in both processes... For my own sake, I decided to go through all the colourants I currently posses, to create swatches for each of them and to generate a table with all their features and behaviours. Definitely useful
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