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Ingredient on hair labels

Leuconostoc/Radish Root Ferment Filtrate

TheWashDay editorial · Updated · From the EU ingredient register and the makers’ own labels · How we match names

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Leuconostoc/Radish Root Ferment Filtrate is on 3 of the 177 hair-product labels we compare, from 2 makers, most often in heat protectants. Its uses in the EU ingredient register are antimicrobial and anti-seborrheic. None of these labels names it among its first five ingredients.

See it on each label Products without it

What it is

In the register’s words: “Leuconostoc/Radish Root Ferment Filtrate is a filtrate of the product obtained by the fermentation of Raphanus sativus roots by the microorganism, Leuconostoc.”

What the register lists it for

These are the uses the European Commission’s CosIng register lists for Leuconostoc/Radish Root Ferment Filtrate in any cosmetic, hair roles first. They say why a maker might add it, not what it does in one formula, and they aren’t a safety rating.

Antimicrobial

Slows the growth of microbes, in the product or on the surface it touches. Some preservatives, extracts and essential oils carry this role.

Register definition: “Preventing and/or slowing down microbial growth.”

Anti-seborrheic

The register’s role for ingredients used against the symptoms of seborrheic dermatitis, including dandruff. On a label it says why a maker may add it, not that a product treats dandruff.

Register definition: “Preventing or relieving the symptoms of seborrhea and/or seborrheic dermatitis, including dandruff.”

Where it sits on each label

US labels list ingredients from most to least, except that those at 1% or less may follow in any order. A name near the top is a large part of the formula. A label doesn’t mark where the 1% point falls, so further down, the order says little about how much is in it.

Every label, product by product (3)

Each line runs from the first name on a label to the last; a dot is where this ingredient sits. Makers change formulas now and then; if the list on your bottle differs, go by your bottle.

Your next step

Find products without Leuconostoc/Radish Root Ferment Filtrate Check every name on your own label All ingredients on the labels we compare

Other antimicrobial ingredients on these labels

Updated · The name, numbers and uses come from the European Commission’s CosIng entry (CC BY 4.0); we write the uses in US spelling and put the hair ones first. The labels are each maker’s own. The order rule is the FDA’s Cosmetics Labeling Guide. All our sources are on the Sources page.