The best replacement for natural dyes is synthetic dyes.

The best alternatives to natural dyes are rated as following:
★★★★★  synthetic dyes
★★  artificial dyes
★★  chemical dyes

Your alternative for natural dyes is not listed? Suggest!
Speaking about natural dyes, one probably shouldn't forget about wool.

Other search terms related to natural dyes and their ratings are:
★★★★★ wool
You have in mind a companion for natural dyes and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of natural dyes in all years. Click on graph for more.
natural dyes
synthetic dyes
artificial dyes