Independent buying guides for soap making

Best Liquid Soap Colorants for Easy Mixing

Updated How we research

Our top pick

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

A 36 Colors concentrated food grade skin safe liquid colorant set for bath bombs and soap, in vibrant rainbow shades.

Our score8.3/10

Best budget

Soap Dye - 24 Color Food Grade Skin Safe Coloring for Bath Bomb and DIY Making Supplies - Liquid Concentrated Colorant Kit

A 24 Color food grade, skin safe liquid concentrated soap dye kit for bath bombs and DIY soap making.

Our score8.0/10

Liquid soap colorants are pre-dispersed color concentrates you add drop by drop, letting you dial in shade and intensity without pre-mixing powders. Home soap makers favor them for convenience and control, since they blend smoothly with no clumps and make repeatable color easy to hit batch after batch. They suit melt-and-pour especially well and work in cold process when formulated for high pH. Look at the concentration and how many drops a target shade needs, since thin colorants can water down melt-and-pour if overused. Check stability in your process, whether the color bleeds in layered designs, and that the product is cosmetic-grade and skin-safe. Clear usage guidance and a squeeze or dropper bottle help you measure precisely and store the colorant cleanly between projects.

The short version

We compared 8 picks. Our scores range from 6.1 to 8.3 out of 10.

Scores are our editorial assessment, not customer ratings. How we score

  1. 1.Bath Bomb Soap Dye - 36 Colors Concentrated Food Grade Skin Safe Liquid Based Colorant Vibrant Rainbow Coloring
    8.3/10See on AmazonCheck price
  2. 2.Soap Dye - 24 Color Food Grade Skin Safe Coloring for Bath Bomb and DIY Making Supplies - Liquid Concentrated Colorant Kit
    8.0/10See on AmazonCheck price
  3. 3.20 Colors Bath Bomb Soap Dye - Wayin Food Grade Skin Safe Liquid Based Colorant, Vibrant Concentrated Neon Soap Coloring
    8.0/10See on AmazonCheck price
  4. 4.18 Color Bath Bomb Soap Dye with Shrink Wrap Bags - Food Grade Skin Safe Coloring for DIY Bath Bomb Making, Handmade Soaps
    8.0/10See on AmazonCheck price
  5. 5.9 Liquid Dye Colorant Set for Soap Coloring, Bath Bomb Making - Plum, Brown, Lemon, Black, Rose, Peach, Turquoise, Wine, Green (10 ml Each)
    7.8/10See on AmazonCheck price
  6. 6.Natural Food Coloring and Soap Dye - Bundle of 18 (10ml) Liquid Bath Bomb Colorant for DIY Making Crafts Supplies
    7.8/10See on AmazonCheck price
  7. 7.12 Color Bath Bomb Soap Dye - Skin Safe Colorant - 0.35 oz Natural Liquid Food Grade Coloring for DIY Bath Bomb Supplies Kit
    7.6/10See on AmazonCheck price
  8. 8.Natural Soap Making Colorant Set - Dye Pigment Powder Soap Supplies Sampler Kit Variety Pack for Handmade Cosmetics
    6.1/10See on AmazonCheck price
Tick up to 3 picks to compare them side by side.
Bath Bomb Soap Dye - 36 Colors Concentrated Food Grade Skin Safe Liquid Based Colorant Vibrant Rainbow Coloring#1
See on Amazon

A 36 Colors concentrated food grade skin safe liquid colorant set for bath bombs and soap, in vibrant rainbow shades.

Fit for the job 8/10 · Features and specs 9/10 · Build and materials 7/10 · Value 9/10

  • + 36 Colors is one of the widest liquid dye ranges available
  • + Concentrated formula means a few drops color a whole batch
  • + Food grade skin safe labeling fits kids' and gift soaps
  • - Big range takes more storage and organization space
  • - Rainbow dyes may shift or fade in cold process recipes
Soap Dye - 24 Color Food Grade Skin Safe Coloring for Bath Bomb and DIY Making Supplies - Liquid Concentrated Colorant Kit#2
See on Amazon

A 24 Color food grade, skin safe liquid concentrated soap dye kit for bath bombs and DIY soap making.

Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 9/10

  • + 24 Color range makes it easy to mix exact shades
  • + Liquid concentrate blends evenly into melt and pour bases
  • + Food grade skin safe labeling reassures makers of kids' soaps
  • - Food grade dyes often fade or morph in cold process lye soap
  • - Liquid dyes can bleed between layers in multi-color bars
20 Colors Bath Bomb Soap Dye - Wayin Food Grade Skin Safe Liquid Based Colorant, Vibrant Concentrated Neon Soap Coloring#3
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Wayin 20 Colors food grade skin safe liquid colorant set with vibrant concentrated neon soap coloring.

Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 9/10

  • + Neon shades give bold, bright melt and pour soaps
  • + 20 Colors offer a wide liquid palette for mixing
  • + Concentrated liquid needs only a few drops per batch
  • - Neon colors often fade faster than regular soap colorants
  • - Liquid neon dyes may morph in high pH cold process soap
18 Color Bath Bomb Soap Dye with Shrink Wrap Bags - Food Grade Skin Safe Coloring for DIY Bath Bomb Making, Handmade Soaps#4
See on Amazon

An 18 Color food grade skin safe soap dye set bundled with shrink wrap bags for bath bombs and handmade soaps.

Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 9/10

  • + Included shrink wrap bags help package finished soaps
  • + 18 Color range is a solid middle size for liquid dyes
  • + Food grade skin safe dye is suitable for gift soaps
  • - Shrink bags need a heat gun or hair dryer to seal properly
  • - Bundle value depends on whether you need the wrap bags
9 Liquid Dye Colorant Set for Soap Coloring, Bath Bomb Making - Plum, Brown, Lemon, Black, Rose, Peach, Turquoise, Wine, Green (10 ml Each)#5
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A set of 9 liquid dye colorants, 10 ml each, in plum, brown, lemon, black, rose, peach, turquoise, wine and green.

Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 8/10

  • + Named shades like wine, plum and turquoise help plan color themes
  • + 10 ml each is enough for many melt and pour batches
  • + Liquid dyes mix quickly without clumping or specks
  • - 9 colors is a smaller range than the larger dye kits
  • - Black and brown liquid dyes can stain lather and washcloths
Natural Food Coloring and Soap Dye - Bundle of 18 (10ml) Liquid Bath Bomb Colorant for DIY Making Crafts Supplies#6
See on Amazon

A bundle of 18 natural food coloring soap dyes in 10ml bottles, a liquid colorant set for bath bombs and crafts.

Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 8/10

  • + 18 bottles of 10ml give a decent supply across a wide color range
  • + Natural food coloring appeals to makers wanting gentler colorants
  • + Liquid format stirs straight into melted soap base
  • - Natural food colors tend to fade faster than cosmetic pigments
  • - Crafts and bath bomb focus means little cold process guidance
12 Color Bath Bomb Soap Dye - Skin Safe Colorant - 0.35 oz Natural Liquid Food Grade Coloring for DIY Bath Bomb Supplies Kit#7
See on Amazon

A 12 Color skin safe liquid food grade colorant set with 0.35 oz bottles for bath bombs and soap.

Fit for the job 8/10 · Features and specs 7/10 · Build and materials 7/10 · Value 8/10

  • + 0.35 oz bottles are fine for many small melt and pour batches
  • + 12 Color set covers basic shades for mixing custom tones
  • + Natural and food grade labeling suits family-friendly crafts
  • - Small bottles run low quickly when coloring full loaves
  • - Natural liquid colors can be less vivid than synthetic dyes
Natural Soap Making Colorant Set - Dye Pigment Powder Soap Supplies Sampler Kit Variety Pack for Handmade Cosmetics#8
See on Amazon

A natural soap colorant sampler kit of dye and pigment powders, a variety pack for handmade soap and cosmetics.

Fit for the job 5/10 · Features and specs 6/10 · Build and materials 7/10 · Value 7/10

  • + Sampler variety lets you test many colors before buying full sizes
  • + Natural pigment powders appeal to makers avoiding synthetic dyes
  • + Suits cosmetics as well as soap, so leftovers stay useful
  • - Powders are not liquid colorants, so they need mixing in oil first
  • - Check how many colors and how much of each are included before ordering

Before you buy: trade-offs we flagged

No pick is perfect. These are the main compromises we noted for the top products in this guide, so you can check they will not matter for you.

Frequently asked questions

›What is the best choice among liquid soap colorants for easy mixing?

Bath Bomb Soap Dye - 36 Colors Concentrated Food Grade Skin Safe Liquid Based Colorant Vibrant Rainbow Coloring is our top overall pick. A 36 Colors concentrated food grade skin safe liquid colorant set for bath bombs and soap, in vibrant rainbow shades. It earns our score of 8.3/10, based on fit for the job, features, build and value.

›What is a good budget option?

Soap Dye - 24 Color Food Grade Skin Safe Coloring for Bath Bomb and DIY Making Supplies - Liquid Concentrated Colorant Kit is the strongest low-cost pick in this guide. A 24 Color food grade, skin safe liquid concentrated soap dye kit for bath bombs and DIY soap making.

›How much should I expect to spend?

Picks in this guide span See on Amazon price bands (roughly: $ = under $30, $$ = $30 to $100, $$$ = over $100). We never display exact prices because they change constantly, so the buttons above always show Amazon's current price.

›How were these products chosen?

We shortlist products that fit the job this guide solves and compare their published specifications, such as size, capacity, materials and what is included. Each pick gets an editorial score out of 10 for fit, features, build and value, and we write the pros and cons from those details. Our score is not an Amazon customer rating. We earn a commission if you buy through our links, which never affects the ranking.

Soap Making Nest independently selects every product; we may earn a commission from links above.

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