Cotton Hair Fiber Brands Compared: most., Hair Guru London, HairFiberPlus, Boost N Blend, Mammut and More

most. is one of eight hair fiber brands that stated cotton as their fiber on their own websites on October 2, 2026. This page transcribes what each one publishes: the material claim, colorant, binder, shade count, bottle size and price, where it ships from and the guarantee, quoted with the source. It does not rank them. Gaps are marked "not published."

Which hair fiber brands say their fibers are cotton?

Eight brands stated cotton on their own sites on October 2, 2026: most., Hair Guru London, HairFiberPlus, Boost N Blend, Mammut, O.C. Haircare, Caboki and Febron. Each claim is quoted in the table below in the brand's own words, with an English translation in brackets where the site is not in English.

Two brands often named alongside them are not listed. B-Fiber's product page describes its fibers as made with "proteína de queratina de alta calidad" (high quality keratin protein), so it is recorded as a keratin brand on the cotton vs keratin page. The KMax España site returned no readable content when fetched, so nothing about it is recorded here.

What does each cotton brand publish about its fiber, colorant, binder, size, price and guarantee?

The table transcribes eight cotton brands as each described itself on October 2, 2026. Prices are the single-bottle price on the product page, in the currency and format shown, including any sale price at the time. "Not published" means the fetched pages did not state it. most. makes one of these products, so the table quotes and does not judge.

Mammut's home and product pages say its fibers contain "ingen syntetiske farvestoffer" (no synthetic dyes); the same product page lists the three CI numbers above by shade. Both statements are quoted, neither is preferred. Boost N Blend explains that sodium sulfate "is required to keep the fibres from taking in moisture" and aluminium silicate "is used for weight."

Which cotton brands refund an opened or used bottle?

Two of the eight publish terms that cover a used bottle. On a first order, most. refunds used or empty bottles within 30 days of delivery and sends a prepaid return label. Febron accepts "even your empty bottles" within 30 days, minus shipping and handling. The other six either ask for unused goods or do not say whether a used bottle qualifies.

• Hair Guru London offers a "30-Day Money Back Guarantee" and states "Items must be unused and in original packaging."
• HairFiberPlus excludes cosmetics from returns once "la confezione o il sigillo" (the packaging or seal) has been opened.
• Mammut publishes a 14-day right of withdrawal: you may try the item but "ikke tage den i egentlig brug" (not put it into actual use).
• Boost N Blend, O.C. Haircare and Caboki state a 30-day window and do not say whether a used bottle qualifies.

What does "cotton" mean on a hair fiber label?

On a hair fiber label, cotton means cellulose from the cotton plant. Cotton fiber is mostly cellulose, a long chain of glucose units that plants build their cell walls from. Labels name it in several ways: Gossypium herbaceum, the botanical name of one cotton species; cotton; cellulose; or a pairing such as "Cellulose (cotton fiber)."

Purified cotton cellulose is often made from cotton linters, the short fibers left on the seed after the long fibers are ginned off for textiles. Linters are a common source of cellulose for cosmetic and industrial use. None of the pages fetched says whether its cotton is lint, linters or another cotton source, and this page makes no claim about any brand's supply.

Is rayon or viscose the same as cotton?

Rayon and viscose are cellulose too, but regenerated: cellulose, usually from wood pulp and sometimes from cotton linters, is dissolved chemically and spun back into new fibers. The result is still chemically cellulose, with a rebuilt structure. A label that says only "cellulose" does not tell you whether the fiber is native cotton or regenerated.

Lyocell and modal belong to the same regenerated family. Cellulose gum, on the most. list, is different again: it is a cellulose derivative, sodium carboxymethylcellulose, used in cosmetics as a binder and thickener, not as the fiber itself. None of the eight brands names rayon, viscose or lyocell on the pages fetched.

How do you check a cotton hair fiber label yourself?

Check five things on the bottle you receive, not only the website: the first ingredient, every colorant number, any binder or salt, any ammonium chloride or preservative, and the size in grams. Websites lag labels, this one included. If the label and the site differ, the label is current, and the brand can tell you which is right.

1. First ingredient. Gossypium herbaceum, cotton or cellulose means plant cellulose. Rayon or viscose means regenerated cellulose. Keratin means an animal protein.
2. Colorants. CI numbers in the 77000s are mineral pigments; other CI numbers are organic colorants. "Mineral based colorant" with no number does not say which mineral.
3. Binder and salts. Look for cellulose gum, sodium chloride, sodium sulfate or ammonium chloride. If none is printed, the list does not say what holds the powder together.
4. Preservative and fragrance. Look for phenoxyethanol, chlorphenesin, parabens, fragrance or parfum.
5. Grams and price. Divide the price by the grams, in the same currency, to compare a 25 g bottle with a 28 g or 30 g one.

To run the same check on most., the label transcription is on the most. ingredients page, which also notes one further entry still being confirmed against the manufacturer's specification sheet. most. comes in Black, Dark Brown, Light Brown and Blonde, and shade swaps are free with no return.

Where to read next

• Cotton vs keratin hair fibers: which brands use which
• Hair fiber ingredient lists compared
• What hair building fibers are made of
• Vegan and cruelty-free hair fibers
• The most. guarantee and free shade swap
• most. hair fibers product page