Ingredient review

PEG-80 Hydrogenated Dimer Dilinoleate

INCI: PEG-80 Hydrogenated Dimer Dilinoleate

A gentle synthetic emulsifier that helps blend oil and water in cleansers and lotions, with a low risk of irritation.

beautyskincareemulsifier

In plain English

This is a lab-made ingredient that helps oil and water mix together in skincare products. It works like a bridge between the two, so your cleanser or lotion stays smooth and doesn't separate. It's often used in gentle, non-stripping cleansers because it can remove dirt and makeup without leaving your skin feeling tight or dry.

Review score

Safety, usefulness, and evidence

3.8Good

3.8/ 5

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: synthetic
Evidence: moderate
Irritation: low
Clogging risk: low

How reviews are scored

Quick decision guide

Useful, but context matters

PEG-80 Hydrogenated Dimer Dilinoleate 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 PEG-80 Hydrogenated Dimer Dilinoleate.
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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

PEG-80 Hydrogenated Dimer Dilinoleate is a synthetic polymer made by reacting ethylene oxide with a modified fatty acid derived from linoleic acid (a type of unsaturated fat). The 'PEG-80' part means it has a chain of 80 ethylene oxide units, which makes it water-soluble and mild.

How it works

In a cosmetic formula, this ingredient sits at the boundary between oil and water droplets, reducing surface tension so they can mix into a stable emulsion. It also helps create a rich, creamy lather in cleansers and can thicken the product slightly, giving it a pleasant texture.

Pros

Gentle on skin

Unlike harsher sulfates, this emulsifier is considered low-irritation and suitable for daily cleansing without stripping natural oils.

Improves product texture

It helps create a smooth, creamy consistency in cleansers and lotions, making them more pleasant to apply and rinse off.

Cons and cautions

Synthetic origin

As a PEG compound, it is manufactured through chemical processes, which may be a concern for those seeking naturally derived or minimal-ingredient products.

Limited skin absorption data

While generally considered safe, there is less independent research on how PEG-80 compounds interact with the skin over long-term use compared to some traditional emulsifiers.

Best for

People with normal to dry skin who want a gentle, non-stripping cleanser
Anyone looking for a stable, well-formulated lotion or cream

Use caution if

Those who strictly avoid synthetic or PEG-based ingredients in their routine

Usage tips

Look for this ingredient in the middle to lower half of the ingredient list, as it's typically used at low concentrations.

Pair with a gentle, pH-balanced cleanser to maintain your skin's natural barrier.

Safety summary

PEG-80 Hydrogenated Dimer Dilinoleate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. As with all PEGs, quality manufacturing ensures minimal impurities.

Research notes

The Cosmetic Ingredient Review (CIR) has reviewed PEG compounds and concluded they are safe in cosmetics. Individual studies on this specific ingredient are limited, but its chemical class is well-characterized and widely used in personal care products.

Common label clues

Typical concentration: 1–5% in rinse-off products; lower in leave-on formulas
Regulatory status: Approved for use in cosmetics by the FDA and the European Commission. The Cosmetic Ingredient Review (CIR) panel has evaluated PEG compounds and found them safe as used in rinse-off and leave-on products at typical concentrations.
Common uses: Cleansers, Facial washes, Body washes, Lotions
Environmental note: PEG compounds are generally biodegradable, but their production relies on petrochemicals. Some environmental concerns exist regarding the persistence of certain PEG derivatives in aquatic systems.

Good to know

PEG compounds can sometimes be contaminated with ethylene oxide or 1,4-dioxane during manufacturing, but reputable brands purify their ingredients to remove these impurities.
This ingredient is not a primary active; it's a helper ingredient that improves product feel and stability.

Common questions

What is PEG-80 Hydrogenated Dimer Dilinoleate in beauty products?

What does PEG-80 Hydrogenated Dimer Dilinoleate do in a beauty product?

Is PEG-80 Hydrogenated Dimer Dilinoleate safe for most people?

Who should be careful with PEG-80 Hydrogenated Dimer Dilinoleate?

Those who strictly avoid synthetic or PEG-based ingredients in their routine

Research sources

Cosmetic Ingredient Review (CIR) – Safety Assessment of PEGsOpen European Commission CosIng Database – PEG-80 Hydrogenated Dimer DilinoleateOpen PubMed – Safety of PEGs in CosmeticsOpen

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.