Ingredient on hair labels

Dimethicone

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

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Dimethicone is on 10 of the 177 hair-product labels we compare, from 7 makers, most often in deep conditioners. Its uses in the EU ingredient register include emollient, antifoaming and skin conditioning. 6 of these labels name it among the first five ingredients.

What it is

EU register name (INCI)
DIMETHICONE
CAS number
63148-62-9 / 9006-65-9 / 9016-00-6
EC number
- / - / - /

What the register lists it for

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

Emollient

Oils, butters and similar ingredients that make a surface feel soft and smooth. On hair they coat the strand; many plant oils carry this role.

Register definition: “Acting as lubricants on the skin surface providing the skin with a soft and smooth appearance.”

Antifoaming

Keeps foam down while the product is made or used.

Register definition: “Suppressing foam during manufacturing or reducing the tendency of finished products to generate foam.”

Skin conditioning

The register’s broad role for ingredients that keep skin in good condition. On a hair label it often sits beside a hair role, or marks a plant oil or extract.

Register definition: “Maintaining the skin in good condition.”

Skin protecting

Helps shield skin from outside factors. On a hair label it usually sits beside a conditioning role.

Register definition: “Helping to avoid harmful effects to the skin from external factors.”

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 (10)

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

Other emollient 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.