Ingredient on hair labels

Vinegar

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

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Vinegar is on 3 of the 177 hair-product labels we compare, from 3 makers, most often in clarifying shampoos. The EU ingredient register lists one use for it: no role listed. None of these labels names it among its first five ingredients.

What it is

In the register’s words: “Vinegar is a liquid consisting of dilute acetic acid obtained by fermentation.”

EU register name (INCI)
VINEGAR
CAS number
8028-52-2
Written on these labels as
Vinegar; Vinegar (Acetum / Vinaigre)

What the register lists it for

These are the uses the European Commission’s CosIng register lists for Vinegar 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.

No role listed

The register lists no use for this ingredient yet.

Register definition: “No function currently reported.”

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

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.