Ingredient review
PEG-2 Tallowamide DEA
INCI: PEG-2 TALLOWAMIDE DEA
An effective foam booster and thickener, but may cause irritation for sensitive skin and raises ethical concerns due to animal-derived tallow.
In plain English
PEG-2 Tallowamide DEA is a cleansing ingredient made by reacting tallow (a fat from animal fat) with coconut oil and ethylene oxide. It helps create a rich, stable lather and thickens liquid cleansers like shampoos and body washes. However, it can be drying or irritating for some people, and its animal origin may not suit vegan or cruelty-free preferences.
Review score
Safety, usefulness, and evidence
Useful in the right context, but not low-maintenance
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is moderate; clogging risk is low.
- Source
- semi synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Read the cautions before using
PEG-2 Tallowamide DEA can be useful, but watch for some irritation potential.
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 PEG-2 Tallowamide DEA.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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 surfactant created by ethoxylating tallowamide (a compound from animal fat) with two moles of ethylene oxide. It is a member of the alkanolamide family, commonly used to boost foam and adjust viscosity in cleansing formulas.
How it works
It reduces the surface tension between water and oil, helping to lift dirt and oil from skin and hair. It also interacts with other surfactants to create a thicker, creamier foam and stabilize the product's texture.
Pros
Excellent foam booster
Creates a dense, stable lather that many users associate with effective cleansing, especially in shampoos and body washes.
Improves product texture
Acts as a thickener, giving liquid cleansers a luxurious, gel-like consistency without needing additional polymers.
Cons and cautions
Potential irritant
Can strip natural oils and cause dryness or irritation, particularly for those with sensitive or compromised skin barriers.
Animal-derived and not vegan
Made from tallow (animal fat), which may conflict with ethical or lifestyle choices. Also, ethoxylation can produce trace contaminants like 1,4-dioxane.
Best for
- People with normal to oily skin who enjoy a foamy cleanser
- Those looking for a cost-effective thickener in rinse-off products
Use caution if
- Individuals with sensitive, dry, or eczema-prone skin
- Vegans or those avoiding animal-derived ingredients
Usage tips
Safety summary
Generally recognized as safe in rinse-off products at low concentrations, but can cause irritation for sensitive individuals. The ethoxylation process may leave trace impurities, though levels are regulated. Not recommended for daily use on compromised skin.
Research notes
Studies show alkanolamides like PEG-2 Tallowamide DEA are effective foam boosters but can be mild to moderate irritants. The Cosmetic Ingredient Review (CIR) panel has evaluated related DEA compounds and concluded they are safe when formulated to minimize free DEA and 1,4-dioxane.
Common label clues
- Typical concentration
- 1–5% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the US (FDA) and EU (CosIng) within concentration limits. The EU restricts 1,4-dioxane content to ≤10 ppm in finished products.
- Common uses
- Shampoos, Body washes, Facial cleansers, Liquid soaps
- Environmental note
- Tallow is a byproduct of the meat industry, so its use may be considered more sustainable than some plant oils, but it is not suitable for vegan or cruelty-free formulations.
Good to know
- PEG-2 Tallowamide DEA is often listed alongside other alkanolamides like Cocamide DEA, but its animal origin sets it apart.
- The 'PEG-2' indicates two ethylene oxide units, which helps improve water solubility.
Common questions
What is PEG-2 Tallowamide DEA in beauty products?
PEG-2 Tallowamide DEA is a cleansing ingredient made by reacting tallow (a fat from animal fat) with coconut oil and ethylene oxide. It helps create a rich, stable lather and thickens liquid cleansers like shampoos and body washes. However, it can be drying or irritating for some people, and its animal origin may not suit vegan or cruelty-free preferences.
What does PEG-2 Tallowamide DEA do in a beauty product?
It reduces the surface tension between water and oil, helping to lift dirt and oil from skin and hair. It also interacts with other surfactants to create a thicker, creamier foam and stabilize the product's texture.
Is PEG-2 Tallowamide DEA safe for most people?
Generally recognized as safe in rinse-off products at low concentrations, but can cause irritation for sensitive individuals. The ethoxylation process may leave trace impurities, though levels are regulated. Not recommended for daily use on compromised skin.
Who should be careful with PEG-2 Tallowamide DEA?
Individuals with sensitive, dry, or eczema-prone skin Vegans or those avoiding animal-derived ingredients
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.