What it is
In the register’s words: “Tridecanol, ethoxylated, propoxylated (6 mol EO, 1 mol PO average molar ratio).”
- EU register name (INCI)
- PPG-1 TRIDECETH-6
- CAS number
- -
- EC number
- -
What the register lists it for
These are the uses the European Commission’s CosIng register lists for PPG-1 Trideceth-6 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.
- Cleansing surfactant
-
The washing ingredients: they let water lift oil, product and dirt off hair and scalp. Shampoos list them near the top; some conditioners hold a little.
Register definition: “Wetting body surfaces, emulsifying or solubilizing oils, and suspending soil (generally, such ingredients contribute to the foaming and lathering properties of cleansing products).”
- 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.”
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.
- Rinse-out conditioners 4 labels First five names: 0 of 4 Rinse-out conditioners without it
- Deep conditioners 7 labels First five names: 0 of 7 Deep conditioners without it
- Leave-in conditioners 2 labels First five names: 0 of 2 Leave-in conditioners without it
- Stylers 1 label First five names: 0 of 1 Stylers without it
- Heat protectants 1 label First five names: 0 of 1 Heat protectants without it
Every label, product by product (15)
- Aunt Jackie's In Control Moisturizing Softening Conditioner Rinse-out conditioner 18th of 39 names
- Maui Moisture Curl Quench + Coconut Oil Conditioner Rinse-out conditioner 22nd of 26 names
- PATTERN Medium Conditioner Rinse-out conditioner 33rd of 38 names
- Ouidad Curl Quencher Moisturizing Conditioner Rinse-out conditioner 21st of 24 names
- DevaCurl Melt Into Moisture Deep conditioner 23rd of 41 names
- Mielle Babassu & Mint Deep Conditioner Deep conditioner 23rd of 38 names
- Maui Moisture Heal & Hydrate + Shea Butter Hair Mask Deep conditioner 18th of 26 names
- Rizos Curls Deep Conditioner Deep conditioner 15th of 20 names
- Kristin Ess Strand Strengthening Reconstructive Moisture Mask Deep conditioner 38th of 50 names
- Aunt Jackie's Coco Repair Coconut Creme Deep Conditioner Deep conditioner 26th of 33 names
- As I Am Hydration Elation Intensive Conditioner Deep conditioner 25th of 29 names
- DevaCurl Leave-In Decadence Leave-in conditioner 21st of 39 names
- PATTERN Leave-In Conditioner Leave-in conditioner 28th of 43 names
- Maui Moisture Curl Quench + Coconut Oil Curl Smoothie Styler 21st of 28 names
- Briogeo Farewell Frizz Blow Dry Perfection & Heat Protectant Crème Heat protectant 17th of 30 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 cleansing surfactant ingredients on these labels
- Sodium Methyl Cocoyl Taurate 4 labels
- Peg-100 Stearate 3 labels
- C12-13 Alketh-23 2 labels
- PEG-150 Stearate 2 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.