Ingredient review

Oleyl Acetyl Glutaminate

INCI: Oleyl Acetyl Glutaminate

A mild, amino-acid-derived ingredient that conditions skin without irritation, making it a good choice for sensitive or dry skin types.

beautyskincareconditioning agent

In plain English

Oleyl Acetyl Glutaminate is a gentle skin-conditioning ingredient made from a fatty alcohol (oleyl alcohol) and an amino acid (glutamine). It helps soften and smooth the skin's surface, similar to how a light lotion makes your skin feel silky. Because it's derived from natural building blocks, it's generally very well tolerated and unlikely to clog pores or cause stinging.

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
semi synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Oleyl Acetyl Glutaminate 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 Oleyl Acetyl Glutaminate.
  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

Oleyl Acetyl Glutaminate is a semi-synthetic compound created by combining oleyl alcohol (a fatty alcohol from plant sources) with acetyl glutamine (a modified amino acid). It belongs to a class of ingredients called amino-acid-based surfactants and conditioners, prized for their mildness and compatibility with skin.

How it works

When applied to the skin, Oleyl Acetyl Glutaminate forms a thin, non-greasy film that helps reduce water loss and makes the skin feel smoother. It also has a slight ability to help other ingredients spread more evenly, improving the texture of a product. Unlike harsher surfactants, it does not strip the skin's natural oils.

Pros

Very gentle on skin

Because it's derived from an amino acid, it's much less likely to cause stinging or irritation compared to many synthetic emollients or surfactants.

Non-greasy feel

It leaves skin feeling soft and smooth without a heavy or oily residue, making it ideal for daytime use or under makeup.

Cons and cautions

Limited research

There are fewer peer-reviewed studies on this specific ingredient compared to classics like glycerin or hyaluronic acid, so its long-term benefits are less documented.

Not a standalone hydrator

It conditions the skin but does not actively attract water like a humectant, so it works best in combination with other moisturizing ingredients.

Best for

  • People with dry or dehydrated skin looking for a gentle conditioner
  • Those with sensitive or reactive skin who want to avoid common irritants

Use caution if

  • Anyone with a known allergy to any component (rare, but possible)

Usage tips

Look for it in leave-on products like moisturizers and serums for the best conditioning effect.
Pair it with a humectant (like glycerin or hyaluronic acid) for both softness and hydration.

Safety summary

Oleyl Acetyl Glutaminate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic profile, making it suitable for sensitive and acne-prone skin. No significant safety concerns have been reported in regulatory reviews.

Research notes

Research on Oleyl Acetyl Glutaminate is limited but consistent with other amino-acid-based conditioners. Studies on similar compounds show good skin compatibility and low irritation. The Cosmetic Ingredient Review (CIR) has not issued a specific monograph, but related amino-acid derivatives are generally recognized as safe.

Common label clues

Typical concentration
0.5% to 3%
Regulatory status
Approved for use in cosmetics in the EU, US, and most major markets. No special restrictions.
Common uses
Moisturizers, Serums, Cleansers, Leave-on treatments
Environmental note
Derived from plant-based fatty alcohols and amino acids, it is considered biodegradable and low in aquatic toxicity.

Good to know

  • It is often used in 'amino-acid' or 'gentle' skincare lines aimed at sensitive skin.
  • The ingredient is considered biodegradable and has a low environmental impact.

Common questions

What is Oleyl Acetyl Glutaminate in beauty products?

Oleyl Acetyl Glutaminate is a gentle skin-conditioning ingredient made from a fatty alcohol (oleyl alcohol) and an amino acid (glutamine). It helps soften and smooth the skin's surface, similar to how a light lotion makes your skin feel silky. Because it's derived from natural building blocks, it's generally very well tolerated and unlikely to clog pores or cause stinging.

What does Oleyl Acetyl Glutaminate do in a beauty product?

When applied to the skin, Oleyl Acetyl Glutaminate forms a thin, non-greasy film that helps reduce water loss and makes the skin feel smoother. It also has a slight ability to help other ingredients spread more evenly, improving the texture of a product. Unlike harsher surfactants, it does not strip the skin's natural oils.

Is Oleyl Acetyl Glutaminate safe for most people?

Oleyl Acetyl Glutaminate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic profile, making it suitable for sensitive and acne-prone skin. No significant safety concerns have been reported in regulatory reviews.

Who should be careful with Oleyl Acetyl Glutaminate?

Anyone with a known allergy to any component (rare, but possible)

Research sources

Cosmetic Ingredient Review (CIR) - Amino Acid Derivatives SafetyOpenPubChem - Oleyl Acetyl GlutaminateOpenEuropean Chemicals Agency (ECHA) - Oleyl Acetyl GlutaminateOpen

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.