Ingredient review
PEG-3 Dehydrocholesteryl Succinate
INCI: METHOXY PEG-3 DEHYDROCHOLESTERYL SUCCINATE
A synthetic cholesterol-like ingredient that helps reinforce the skin barrier and improve texture, but its PEG component may raise concerns for some sensitive users.
In plain English
This ingredient is a lab-made version of a cholesterol molecule that has been modified with a small PEG chain to make it water-friendly. In skincare, it acts like a building block for your skin's natural barrier, helping to keep moisture in and irritants out. It also helps other ingredients mix together smoothly in a formula.
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
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PEG-3 Dehydrocholesteryl Succinate 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-3 Dehydrocholesteryl Succinate.
- 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 synthetic compound created by attaching a short PEG chain to a dehydrocholesteryl molecule (a cholesterol derivative). It is designed to mimic natural skin lipids while being easier to formulate into water-based products.
How it works
When applied to the skin, it integrates into the lipid matrix between skin cells, reinforcing the barrier and reducing water loss. Its PEG component gives it mild emulsifying properties, helping oil and water phases blend in a formula.
Pros
Barrier-friendly
Mimics natural skin cholesterol to help repair and maintain the moisture barrier, reducing transepidermal water loss.
Formula stabilizer
Acts as a mild emulsifier, helping create smooth, stable creams and lotions without heavy greasiness.
Cons and cautions
PEG concerns
As a PEG derivative, there is a small risk of contamination with impurities like 1,4-dioxane, though reputable manufacturers ensure purity.
Limited research
Most evidence comes from ingredient suppliers rather than independent peer-reviewed studies, so its efficacy is less established than natural cholesterol.
Best for
- People with dry or dehydrated skin looking to strengthen their moisture barrier
- Those who tolerate synthetic ingredients well and want a lightweight barrier-supporting ingredient
Use caution if
- Individuals with known sensitivity or allergy to PEG compounds or cholesterol derivatives
Usage tips
Safety summary
Generally recognized as safe for topical use at typical concentrations. The main safety consideration is the potential for trace impurities from the PEG manufacturing process, which is well-regulated in quality products.
Research notes
Limited independent clinical data exists specifically for this ingredient. Its efficacy is inferred from the known role of cholesterol in skin barrier function and from supplier studies. More research would strengthen its evidence base.
Common label clues
- Typical concentration
- 0.1% to 2%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and other major markets. The PEG component is subject to purity standards to limit impurities.
- Common uses
- Moisturizers, Anti-aging creams, Serums, Eye creams
- Environmental note
- As a synthetic compound, it is not biodegradable in the same way as natural oils, but its low concentration in formulas minimizes environmental impact.
Good to know
- This ingredient is often used in luxury or high-performance skincare due to its cholesterol-mimicking properties.
- The 'PEG-3' indicates a short polymer chain, which is generally considered less concerning than longer PEG chains.
Common questions
What is PEG-3 Dehydrocholesteryl Succinate in beauty products?
This ingredient is a lab-made version of a cholesterol molecule that has been modified with a small PEG chain to make it water-friendly. In skincare, it acts like a building block for your skin's natural barrier, helping to keep moisture in and irritants out. It also helps other ingredients mix together smoothly in a formula.
What does PEG-3 Dehydrocholesteryl Succinate do in a beauty product?
When applied to the skin, it integrates into the lipid matrix between skin cells, reinforcing the barrier and reducing water loss. Its PEG component gives it mild emulsifying properties, helping oil and water phases blend in a formula.
Is PEG-3 Dehydrocholesteryl Succinate safe for most people?
Generally recognized as safe for topical use at typical concentrations. The main safety consideration is the potential for trace impurities from the PEG manufacturing process, which is well-regulated in quality products.
Who should be careful with PEG-3 Dehydrocholesteryl Succinate?
Individuals with known sensitivity or allergy to PEG compounds or cholesterol derivatives
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.