I make cold process soap, but my daughter (16) is trying melt and pour. She tried a 3-color swirl today and it turned out terrible! She used Michael's "Make Market" brand liquid colorants in clear base. For a white layer, she used white goat milk base. She added peppermint, lemon and orange essential oils with the colorants after the bases were melted. We do not have a microwave, so she used double boilers. The white took a long time to melt, and by the time the white was melted the green was thick and gloppy. No matter how long she heated and stirred, that green remained a slimy clump. What could she have done wrong? I suspect she simply cooked the green instead of just melting it. Do colorants and scents change the consistency of melt and pour like they can with cold process?