Old Soft plastic coloring clumping

[Stilyakin]

Hello all, l have not used my soft plastic coloring for awhile and now it has a solid clump inside with the oil. Is there any way to turn it to liquid again or is it unusable now?  It is the 1 ounce  bottles.

[hawgthumper]

Get some Methyl Ethyl Ketone(MEK) and put a small amount in the bottle and shake it up. You might want to put a small ball bearing in the bottle and shake it up occasionally too.