Candle Dyes at are oil soluble dyes, necessary for making your candles colorful.
Please note that the concentration of the colors varies by types of wax. (Natural waxes require higher proportion of dyes compared to paraffin waxes.)
You can achieve more various colors when blending different liquid dyes together. Likewise for color blocks. Candle Dyes cannot be used for other applications other than candles.
