What it is
In the register’s words: “Dimethylsiloxane, polymer, (((3-((2-aminoethyl)amino)propyl)-dimethoxysilyl)oxy)-terminated.”
- EU register name (INCI)
- AMODIMETHICONE
- CAS number
- 71750-80-6
- EC number
- -
What the register lists it for
These are the uses the European Commission’s CosIng register lists for Amodimethicone 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.”
- Antistatic
-
Cuts the static that makes dry hair fly away. Many conditioning ingredients carry this role too, because both work at the hair’s surface.
Register definition: “Preventing and/or reducing static electricity by neutralising electrical charge on surfaces.”
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.
- Shampoos 2 labels First five names: 0 of 2 Shampoos without it
- Rinse-out conditioners 3 labels First five names: 1 of 3 Rinse-out conditioners without it
- Deep conditioners 3 labels First five names: 0 of 3 Deep conditioners without it
- Leave-in conditioners 1 label First five names: 0 of 1 Leave-in conditioners without it
- Stylers 1 label First five names: 0 of 1 Stylers without it
- Protein treatments 1 label First five names: 0 of 1 Protein treatments without it
- Heat protectants 2 labels First five names: 2 of 2 Heat protectants without it
Every label, product by product (13)
- OLAPLEX No.4 Bond Maintenance Strengthening Shampoo Shampoo 34th of 78 names
- PATTERN Hydration Shampoo Shampoo 23rd of 42 names
- PATTERN Medium Conditioner Rinse-out conditioner 4th of 38 names
- Ouidad Curl Quencher Moisturizing Conditioner Rinse-out conditioner 13th of 24 names
- OLAPLEX No.5 Bond Maintenance Strengthening Conditioner Rinse-out conditioner 37th of 66 names
- The Doux THAT’S DEEP 5-Minute Deep Conditioner Deep conditioner 6th of 25 names
- Kristin Ess Strand Strengthening Reconstructive Moisture Mask Deep conditioner 27th of 50 names
- Aunt Jackie's Coco Repair Coconut Creme Deep Conditioner Deep conditioner 20th of 33 names
- PATTERN Leave-In Conditioner Leave-in conditioner 22nd of 43 names
- TRESemmé Bouncy Curls Defining Cream Styler 15th of 25 names
- ApHogee Keratin 2 Minute Reconstructor Protein treatment 10th of 44 names
- TRESemmé Protecting Heat Styling Spray Heat protectant 3rd of 29 names
- Mielle Mongongo Oil Thermal & Heat Protectant Spray Heat protectant 4th of 28 names
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 hair conditioning ingredients on these labels
- Glycerin 131 labels
- Panthenol 72 labels
- Cocos Nucifera (Coconut) Oil 69 labels
- Behentrimonium Methosulfate 38 labels
- Caprylyl Glycol 37 labels
- Behentrimonium Chloride 34 labels
- Cocamidopropyl Betaine 34 labels
- Simmondsia Chinensis (Jojoba) Seed Oil 34 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.