Bath Bomb Soap Dye - 36 Colors Concentrated Food Grade Skin Safe Liquid Based Colorant Vibrant Rainbow Coloring Review (2026)

Who this dye set fits

This SigWong set packs 36 liquid colors into one order, which makes it a good match for makers who sell a rotating lineup of bars, or who teach classes and want a shade ready for almost any request. Someone making a handful of bars a month in two or three house colors will use only a fraction of the range and may prefer a smaller set. Because the bottles are labeled by shade, the set also works well for a maker who wants to standardize a recipe book, since the same bottle can be reordered later to match an earlier batch. Crafters who mix their own custom tones from a short list of primary dyes will get less value here, since the point of this set is having the shade already mixed rather than blending it yourself.

What is actually in each bottle

Each of the 36 colors ships in its own 0.25 fl oz, about 6ml, bottle, and the listing describes the formula as concentrated with single drop control, so a maker adds one drop at a time and checks the shade before adding more. The brand markets the dyes as food grade, skin safe and non-irritating, which fits their stated use in bath bombs, cold process soap, bath salt, lotion, slime and playdough. Liquid dyes like this are typically water or glycerin based rather than oil based, which is why they blend into batter easily but can behave differently in a true oil-heavy cold process recipe than an oil soluble colorant would. The set does not include mica or pigment powders, so anyone wanting shimmer or opaque coverage will need a separate product.

Using and storing 36 bottles

With this many bottles, organization matters more than with a 6 or 9 color starter kit. Most owners of large dye sets end up sorting bottles into a tray or drawer by color family so a specific shade is easy to find mid-pour, since fumbling through three dozen small bottles while soap batter is thickening wastes time. Because the dyes are concentrated, a little goes a long way, so a single bottle can last through many batches before it needs replacing, which helps offset the upfront cost of getting a color you rarely use. Keep bottles capped tightly and out of direct sun between uses, since concentrated liquid colorants can shift over time with heat and light exposure, and label shelves clearly if multiple people share the workspace.

Trade-offs and how it compares

Against a smaller set like the 24 color liquid colorant kit from the same style of listing, this 36 color set covers more ground in one purchase but takes up more storage and asks a buyer to commit to shades they may only use once. Compared with a compact 9 color set aimed at beginners, this range suits someone past the experimentation stage who already knows they want a deep shade library on hand. Liquid dyes across this category can fade or shift in cold process soap because the high pH of raw soap batter affects pigment differently than it affects a melt and pour base, so colors that look vivid in the bottle may mellow once the bar cures.

Verdict and who should look elsewhere

Choose this set if a wide, ready-mixed color range and concentrated bottles that stretch across many batches matter more to you than a compact kit. It earns our score of 8.3 out of 10 largely on the breadth of its range and value per bottle. Skip it if you only work in two or three signature colors, want oil soluble colorant for a heavy cold process line, or need mica for shimmer effects, since none of those needs are what a 36 color liquid set is built to solve.

Frequently asked questions