May we count your visit with Google Analytics? It uses cookies and sends visit data to Google. You can change this any time under Cookie choices. Privacy

TheWashDay
Menu

Ingredient on hair labels

Bis-(Isostearoyl/Oleoyl Isopropyl) Dimonium Methosulfate

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

Jump to a section

Bis-(Isostearoyl/Oleoyl Isopropyl) Dimonium Methosulfate is on 2 of the 177 hair-product labels we compare, all of them leave-in conditioners, from 1 maker. Its uses in the EU ingredient register are hair conditioning and skin conditioning. 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: “Bis-(Isostearoyl/Oleoyl Isopropyl) Dimonium Methosulfate is the quaternary ammonium salt that conforms to the formula below, where R represents the isostearoyl group, and R' represents the oleoyl group.”

What the register lists it for

These are the uses the European Commission’s CosIng register lists for Bis-(Isostearoyl/Oleoyl Isopropyl) Dimonium Methosulfate 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.

Hair conditioning

The register’s hair role for ingredients that make hair feel softer, smoother or easier to comb. Most conditioners, masks and leave-ins list several.

Register definition: “Enhancing the appearance and feel of hair. Leaving the hair easy to comb, supple, soft and shiny and/or imparting volume, lightness, gloss, texture, etc.”

Skin conditioning

A register role for ingredients that help dry or rough skin feel supple again.

Register definition: “Enhancing the appearance of dry and/or damaged skin by reducing flaking and restoring suppleness.”

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 (2)

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 Bis-(Isostearoyl/Oleoyl Isopropyl) Dimonium Methosulfate Check every name on your own label All ingredients on the labels we compare

Other hair conditioning 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.