Ingredient review
Decyltetradeceth-200 Behenate
INCI: DECYLTETRADECETH-200 BEHENATE
A gentle, high-performance emulsifier that helps create stable, luxurious creams without common irritation concerns.
In plain English
This ingredient is a type of emulsifier, meaning it helps water and oil mix together in a cream or lotion so they don't separate. It's made by attaching a long chain of ethylene oxide (a water-loving part) to a fatty alcohol and a fatty acid from behenic acid (found in rapeseed oil). The '200' in its name indicates a very long water-loving chain, which makes it especially good at thickening and stabilizing formulas. In your skincare, it gives products a smooth, rich feel without leaving a greasy residue.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Decyltetradeceth-200 Behenate is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Decyltetradeceth-200 Behenate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A semi-synthetic polymer made from decyltetradecanol (a branched fatty alcohol), ethylene oxide (200 units), and behenic acid (a long-chain fatty acid from plants). It belongs to the class of alkyl ethoxylate emulsifiers.
How it works
Its long water-loving chain (PEG-200) allows it to form a strong stabilizing film around oil droplets in water, preventing separation. It also increases the viscosity of the water phase, giving creams a thick, luxurious texture. Because it is non-ionic, it works well across a wide pH range and with other ingredients.
Pros
Excellent emulsion stability
The long PEG chain creates a strong barrier around oil droplets, so your cream or lotion stays mixed and doesn't separate, even over time or in varying temperatures.
Gentle on skin
This emulsifier has a very low irritation and comedogenic rating, making it a safe choice for sensitive or acne-prone skin types when used in appropriate concentrations.
Cons and cautions
May feel heavy in high amounts
If used above 5%, the thickening effect can make a product feel tacky or heavy on the skin, which might not be ideal for oily skin or humid climates.
Environmental persistence concerns
As a large synthetic polymer, it may not break down quickly in the environment, which is a consideration for eco-conscious consumers.
Best for
- Anyone looking for a stable, rich moisturizer or sunscreen
- People with normal to dry skin who enjoy a creamy texture
Use caution if
- Those who prefer very lightweight, gel-like textures (this ingredient adds thickness)
Usage tips
Safety summary
Decyltetradeceth-200 Behenate is considered safe for use in cosmetics at typical concentrations. It has low skin irritation and comedogenic potential. The main safety consideration is the potential presence of residual ethylene oxide or 1,4-dioxane from manufacturing, but these are tightly regulated and kept to trace levels in finished products.
Research notes
There is limited peer-reviewed research specifically on this ingredient, but it is well-established in cosmetic formulation literature as a safe and effective emulsifier. Safety assessments by industry panels (e.g., the Cosmetic Ingredient Review) for similar PEG alkyl ethers support its safe use. Most evidence comes from formulation science and regulatory safety reviews.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and most major markets. As a PEG compound, it is subject to purity standards regarding residual ethylene oxide and 1,4-dioxane, which are strictly limited by regulations such as the EU Cosmetics Regulation and FDA guidelines.
- Common uses
- Moisturizers, Sunscreens, Anti-aging creams, Makeup removers
- Environmental note
- This ingredient is semi-synthetic and may not be readily biodegradable due to its large polymer size. Some manufacturers are moving toward more biodegradable alternatives, but it remains widely used for its performance.
Good to know
- The '200' refers to the number of ethylene oxide units, which is unusually high and gives this ingredient its strong thickening and stabilizing power.
- Behenic acid is a natural fatty acid found in rapeseed (canola) oil and is also used in some hair conditioners.
Common questions
What is Decyltetradeceth-200 Behenate in beauty products?
This ingredient is a type of emulsifier, meaning it helps water and oil mix together in a cream or lotion so they don't separate. It's made by attaching a long chain of ethylene oxide (a water-loving part) to a fatty alcohol and a fatty acid from behenic acid (found in rapeseed oil). The '200' in its name indicates a very long water-loving chain, which makes it especially good at thickening and stabilizing formulas. In your skincare, it gives products a smooth, rich feel without leaving a greasy residue.
What does Decyltetradeceth-200 Behenate do in a beauty product?
Its long water-loving chain (PEG-200) allows it to form a strong stabilizing film around oil droplets in water, preventing separation. It also increases the viscosity of the water phase, giving creams a thick, luxurious texture. Because it is non-ionic, it works well across a wide pH range and with other ingredients.
Is Decyltetradeceth-200 Behenate safe for most people?
Decyltetradeceth-200 Behenate is considered safe for use in cosmetics at typical concentrations. It has low skin irritation and comedogenic potential. The main safety consideration is the potential presence of residual ethylene oxide or 1,4-dioxane from manufacturing, but these are tightly regulated and kept to trace levels in finished products.
Who should be careful with Decyltetradeceth-200 Behenate?
Those who prefer very lightweight, gel-like textures (this ingredient adds thickness)
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.