Vegan and cruelty-free hair fibers: what the two labels mean

most. hair fibers are vegan and not tested on animals. The formula is cotton cellulose, cellulose gum, sodium chloride and four mineral pigments, with nothing in it that came from an animal, and most. has engaged no third-party certifier. This page explains what the two labels mean, how they differ, and which brands publish a statement on their own sites.

What does vegan mean on a hair fiber label?

most. hair fibers are vegan, which on a hair fiber label means no ingredient in the bottle came from an animal. The published list is cotton cellulose, cellulose gum, sodium chloride and the mineral pigments CI 77491, CI 77492, CI 77499 and CI 77891. The word vegan describes ingredients only. It says nothing about testing.

In hair fibers the animal ingredient to watch is the fiber itself. Keratin is processed sheep wool. Colorants can be animal derived too: carmine, CI 75470, is made from insects. The four pigments in most. are iron oxides and titanium dioxide, minerals. Cellulose gum, the binder, is plant derived.

Neither vegan nor cruelty-free is regulated the way a nutrition panel is. A brand chooses the word; the ingredient list is how a buyer checks it. most. publishes its list on the ingredients page.

What does cruelty-free mean, and is it the same thing?

most. hair fibers are not tested on animals, which is the claim the phrase cruelty-free is meant to cover. Cruelty-free describes testing, not ingredients. Vegan describes ingredients, not testing. A keratin fiber made from sheep wool can honestly be sold as not tested on animals, and a plant fiber could in principle be tested on animals.

Some brands say the finished product is not tested on animals. Others say neither the finished product nor its ingredients are. When a statement names only the finished product, that is the claim, and nothing wider. most. uses the plainer wording, not tested on animals, because it says what it means.

Are most. hair fibers vegan and not tested on animals?

Yes. most. hair fibers are vegan and not tested on animals. The formula is cotton cellulose, cellulose gum, sodium chloride and the mineral pigments CI 77491, CI 77492, CI 77499 and CI 77891. It contains no keratin, no wool, no ammonium chloride, no fragrance, no parabens, no phenoxyethanol and no preservative of any kind. No third-party certifier has been engaged.

Both claims rest on the published list. The pigments are iron oxide red, yellow and black, and titanium dioxide, all minerals. The list as printed on the label sits on the most. facts page. What most. has and has not tested is on the how we test page; the review base is small, because most. launched in 2026.

Why are most keratin hair fibers not vegan?

most. hair fibers contain no keratin, and that is the reason they are vegan where most keratin fibers are not. Keratin in hair fibers is a protein taken from processed sheep wool. Wool is an animal product, so a keratin fiber cannot be vegan, however it was tested. That is a fact about the raw material, not about performance.

Keratin is the most common material in the category. Keratin fibers have been sold for years, are used by a great many people, and usually come in a wider shade range than most. does. None of that makes them worse at looking like hair. It makes them not vegan. A keratin fiber can still be cruelty-free, because that label is about testing. The material comparison is on the cotton vs keratin hair fibers page; the label is covered on the keratin free hair fibers page.

Does a cotton fiber need a third-party certifier to be vegan?

most. hair fibers are vegan without a third-party certifier, because vegan describes what is in the formula, and most. publishes the formula. No certifier has been engaged. A published ingredient list lets a buyer check the claim line by line, which is what a certifier would otherwise do on the buyer's behalf, for a fee paid by the brand.

A certifier would add an outside party reviewing the list and the suppliers' declarations, a logo on the bottle, and an entry in a public register. It would not change anything in the bottle. most. publishes the list and says plainly that no certifier is involved.

How do you check a hair fiber label for animal ingredients?

most. publishes its ingredient list so a buyer can run this check on it, and the same check works on any brand. Find the ingredient list before reading the front of the pack. The first entry is the fiber: keratin means wool, cellulose means plant. Then read the binder and colorants, and look for a separate sentence on testing.

1. Find the list. If none is published, that is the answer.
2. Read the first entry. Keratin is sheep wool. Cotton, cellulose or Gossypium herbaceum is plant.
3. Read the binder. It should be named, whichever it is.
4. Read the colorants. CI 77491, CI 77492, CI 77499 and CI 77891 are minerals. CI 75470 is carmine, from insects.
5. Look for a testing sentence. Vegan does not cover it.
6. Check the shade exists. most. makes Black, Dark Brown, Light Brown and Blonde. On grey, white or auburn hair, buy a brand that makes your shade.

Which hair fiber brands publish a vegan or cruelty-free statement?

most. states on its own site that its fibers are vegan and not tested on animals. Of the brands most. checked on September 13, 2026, Febron publishes both claims, Caboki answers with its material, Nanogen publishes a testing statement, Toppik states its keratin comes from wool, and Boldify shows vegan and cruelty-free badges. Brands are listed alphabetically, not ranked.

• Boldify. Boldify's product page, getboldify.com/products/hair-thickening-fibers, fetched September 13, 2026, shows "Cruelty-Free" and "Vegan*" badges, the second with an asterisk; most. did not find the note the asterisk points to, so it quotes the badges as printed and nothing more.
• Caboki. Caboki's FAQ, caboki.com/pages/faq, fetched September 13, 2026, asks "Is Caboki vegan and cruelty-free?" and answers that Caboki is made from plant-based cotton fibers and natural minerals. The printed answer names the material and contains no sentence about testing. The same page lists plant fibers from Gossypium herbaceum and natural mineral colorants.
• Febron. Febron's FAQ, febron.com/pages/faqs-febron, fetched September 13, 2026, answers yes to vegan and cruelty-free and states "No animal testing is conducted at any stage of production." The same page lists cotton (Gossypium herbaceum), mineral-based colorant and sodium chloride.
• Nanogen. Nanogen's FAQ, nanogen.com/pages/faqs, fetched September 13, 2026, states that "no finished Nanogen products are tested on animals." The same page describes the fibers as "100% Keratin Fibres" (spelling as printed), so by the definition above they are not vegan.
• Toppik. Toppik's FAQ, toppik.com/pages/faqs, fetched September 13, 2026, states that the fibers are made of keratin protein from "a natural wool source." most. found no vegan or cruelty-free statement on that page. Testing position not verified by most.

These pages can change. Check the brand's site on the day you buy.

If a vegan fiber that is not tested on animals is what you are after, the four shades are on the most. hair fibers product page. A first order carries a 30-day money-back guarantee, most. sends a prepaid return label, and used or empty bottles are refunded in full.