Ingredient review

Sec-Butylphenyl Glyceryl Ether

INCI: SEC-BUTYLPHENYL GLYCERYL ETHER

A synthetic skin conditioner that helps products feel smooth and non-greasy, with a low risk of irritation.

beautyskincareskin conditioning

In plain English

This is a lab-made ingredient added to skincare products to make them feel silky and spread easily on your skin. It also helps keep moisture in by forming a light film that reduces water loss, without leaving a heavy or sticky residue.

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

Sec-Butylphenyl Glyceryl Ether 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 Sec-Butylphenyl Glyceryl Ether.
  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 ether compound derived from butylphenol and glycerin, designed to function as a skin conditioning agent and humectant in cosmetic formulations.

How it works

It sits on the skin's surface, attracting and holding water molecules (humectant action) while also creating a smooth, non-greasy film that improves product spreadability and sensory feel.

Pros

Lightweight feel

Leaves skin feeling smooth and silky without heavy residue, ideal for daytime use under makeup or sunscreen.

Low irritation

Generally well-tolerated even by sensitive skin, with a low risk of redness or stinging in standard concentrations.

Cons and cautions

Synthetic origin

Not derived from natural sources, which may be a drawback for consumers seeking clean or plant-based beauty products.

Limited research

Fewer independent studies exist on long-term effects compared to classic humectants like glycerin, though current data supports safety.

Best for

  • People who prefer lightweight, non-greasy moisturizers
  • Those with normal to combination skin looking for a gentle conditioner

Use caution if

  • Individuals with known sensitivity to synthetic ethers (rare)
  • Those seeking exclusively natural or organic formulations

Usage tips

Look for it in lightweight lotions or gel-creams for a non-sticky finish.
Pair with occlusive ingredients like shea butter if you need extra moisture in dry climates.

Safety summary

Sec-Butylphenyl Glyceryl Ether is considered safe for cosmetic use at typical concentrations. It has low acute toxicity and is not a significant skin sensitizer. Always patch test if you have very sensitive skin.

Research notes

Available data from safety assessments and formulation studies indicate it functions effectively as a skin conditioner with minimal irritation. More independent clinical research would strengthen the evidence base.

Common label clues

Typical concentration
0.1% to 2%
Regulatory status
Approved for use in cosmetics in the EU, US, and other major markets. No specific restrictions at typical use levels.
Common uses
Moisturizers, Serums, Cleansers, Sunscreens
Environmental note
As a synthetic compound, its biodegradability is moderate; it is not known to bioaccumulate significantly.

Good to know

  • Often used alongside other humectants to balance texture and hydration.
  • It is not a fragrance ingredient, despite its chemical name sounding similar to some aromatic compounds.

Common questions

What is Sec-Butylphenyl Glyceryl Ether in beauty products?

This is a lab-made ingredient added to skincare products to make them feel silky and spread easily on your skin. It also helps keep moisture in by forming a light film that reduces water loss, without leaving a heavy or sticky residue.

What does Sec-Butylphenyl Glyceryl Ether do in a beauty product?

It sits on the skin's surface, attracting and holding water molecules (humectant action) while also creating a smooth, non-greasy film that improves product spreadability and sensory feel.

Is Sec-Butylphenyl Glyceryl Ether safe for most people?

Sec-Butylphenyl Glyceryl Ether is considered safe for cosmetic use at typical concentrations. It has low acute toxicity and is not a significant skin sensitizer. Always patch test if you have very sensitive skin.

Who should be careful with Sec-Butylphenyl Glyceryl Ether?

Individuals with known sensitivity to synthetic ethers (rare) Those seeking exclusively natural or organic formulations

Research sources

Cosmetic Ingredient Review (CIR) Safety AssessmentOpenEuropean Chemicals Agency (ECHA) DatabaseOpenINCI Decoder Ingredient ProfileOpen

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.