Ingredient review

PEG/PPG-23/23 Butyl Ether Dimethicone

INCI: PEG/PPG-23/23 BUTYL ETHER DIMETHICONE

A versatile silicone emulsifier that helps create smooth, stable formulas without a greasy feel.

beautyskincareemulsifier

In plain English

This ingredient is a silicone-based helper that allows water and oil to mix together in a product. It also leaves a silky, non-greasy feel on the skin and helps other ingredients spread evenly. Think of it as a smooth operator that keeps your lotion or foundation from separating and gives it a nice texture.

Review score

Safety, usefulness, and evidence

4.0Good
4.0/ 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/PPG-23/23 Butyl Ether Dimethicone 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging PEG/PPG-23/23 Butyl Ether Dimethicone.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

A synthetic silicone polymer modified with polyethylene glycol (PEG) and polypropylene glycol (PPG) chains, plus a butyl ether group. It acts as an emulsifier and skin conditioner.

How it works

It reduces surface tension between water and oil, allowing them to blend into a stable emulsion. Once applied, it forms a thin, breathable film on the skin that feels smooth and helps other ingredients spread easily.

Pros

Excellent emulsifier

Helps water and oil blend seamlessly, preventing product separation and ensuring a consistent texture every time you use it.

Silky skin feel

Leaves a smooth, velvety finish without clogging pores or feeling heavy, making it ideal for primers and lightweight moisturizers.

Cons and cautions

Synthetic origin

Derived from petrochemicals, which may be a concern for those seeking natural or eco-friendly formulations.

Potential PEG impurities

If not manufactured to high purity standards, PEG compounds can contain trace levels of ethylene oxide or 1,4-dioxane, though reputable brands ensure safety.

Best for

  • Anyone looking for a smooth, non-greasy moisturizer or primer
  • People with normal to oily skin who prefer lightweight textures

Use caution if

  • Those who strictly avoid silicones or synthetic ingredients
  • Individuals with known sensitivity to PEG compounds (rare)

Usage tips

Use in water-in-oil or oil-in-water emulsions for stable, luxurious textures.
Pair with other silicones for extra slip in makeup primers.
Start with low concentrations (0.5-2%) and adjust based on desired feel.

Safety summary

Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic risk. As with all PEG compounds, quality manufacturing is key to avoid impurities.

Research notes

Limited peer-reviewed studies specifically on this ingredient, but silicones and PEG derivatives have a long history of safe use in cosmetics. Safety assessments by industry panels (e.g., CIR) support its use.

Common label clues

Typical concentration
0.5% to 5%
Regulatory status
Approved for use in cosmetics globally, including by the FDA (USA) and EU CosIng database, with no concentration restrictions.
Common uses
Moisturizers, Sunscreens, Foundations, Primers, Serums
Environmental note
As a silicone derivative, it may not be biodegradable; however, it is used in low concentrations and is not known to accumulate in the environment significantly.

Good to know

  • This ingredient is often used in 'silicone-based' primers to create a smooth canvas for makeup.
  • It is considered non-comedogenic and safe for most skin types.

Common questions

What is PEG/PPG-23/23 Butyl Ether Dimethicone in beauty products?

This ingredient is a silicone-based helper that allows water and oil to mix together in a product. It also leaves a silky, non-greasy feel on the skin and helps other ingredients spread evenly. Think of it as a smooth operator that keeps your lotion or foundation from separating and gives it a nice texture.

What does PEG/PPG-23/23 Butyl Ether Dimethicone do in a beauty product?

It reduces surface tension between water and oil, allowing them to blend into a stable emulsion. Once applied, it forms a thin, breathable film on the skin that feels smooth and helps other ingredients spread easily.

Is PEG/PPG-23/23 Butyl Ether Dimethicone safe for most people?

Generally recognized as safe for topical use in cosmetics. Low irritation and comedogenic risk. As with all PEG compounds, quality manufacturing is key to avoid impurities.

Who should be careful with PEG/PPG-23/23 Butyl Ether Dimethicone?

Those who strictly avoid silicones or synthetic ingredients Individuals with known sensitivity to PEG compounds (rare)

Research sources

CosIng Database - European CommissionOpenCosmetic Ingredient Review (CIR) - Safety of PEGsOpenPubMed - Silicone Safety 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.