Ingredient review
Pentaerythrityl Tetrastearate
INCI: PENTAERYTHRITYL TETRASTEARATE
A gentle, non-greasy emollient that helps creams and lotions feel silky and spread easily without clogging pores.
In plain English
Pentaerythrityl tetrastearate is a synthetic ingredient made from pentaerythritol and stearic acid (a fatty acid found in plants and animals). In skincare, it acts as an emollient, meaning it softens and smooths the skin by forming a light, breathable film that reduces water loss. It also helps thicken products and gives them a luxurious, silky feel without leaving a heavy or greasy residue. Because it is non-comedogenic (does not clog pores) and has a very low irritation risk, it is commonly used in moisturizers, foundations, and lip products for all skin types, including sensitive and acne-prone skin.
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
Pentaerythrityl Tetrastearate 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 Pentaerythrityl Tetrastearate.
- 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 ester derived from pentaerythritol (a sugar alcohol) and stearic acid (a natural fatty acid). It is a white, waxy solid at room temperature and is widely used in cosmetics as an emollient and texture modifier.
How it works
When applied to the skin, pentaerythrityl tetrastearate forms a thin, non-occlusive film that helps lock in moisture by reducing transepidermal water loss (water evaporating from the skin). It also improves the spreadability and slip of products, making them feel smooth and silky. Additionally, it helps stabilize emulsions (mixtures of oil and water) and can thicken formulations, giving creams and lotions a richer consistency.
Pros
Lightweight feel
Unlike heavier oils or butters, pentaerythrityl tetrastearate leaves a silky, non-greasy finish that works well under makeup or sunscreen.
Pore-friendly
It has a low comedogenic rating, meaning it is unlikely to clog pores, making it a safe choice for acne-prone or oily skin types.
Cons and cautions
Synthetic origin
It is manufactured in a lab, which may be a turn-off for those seeking only naturally derived ingredients.
Limited research
While generally recognized as safe, there are fewer independent studies on this specific ester compared to more common emollients like glycerin or squalane.
Best for
- People with normal to dry skin looking for a lightweight moisturizer
- Those with sensitive or acne-prone skin who need a non-comedogenic emollient
Use caution if
- Individuals who strictly avoid synthetic ingredients in their skincare routine
Usage tips
Safety summary
Pentaerythrityl tetrastearate is considered safe for use in cosmetics. It has a low irritation and sensitization potential and is non-comedogenic. The Cosmetic Ingredient Review panel has concluded it is safe in current usage concentrations.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) and the European Chemicals Agency (ECHA) support its low toxicity and skin compatibility. Most evidence comes from industry-sponsored safety dossiers rather than independent clinical trials.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics by the U.S. FDA and the European Commission. It is listed on the CosIng database and has been reviewed by the Cosmetic Ingredient Review (CIR) panel, which found it safe for use in leave-on and rinse-off products at concentrations up to 10%.
- Common uses
- Moisturizers, Creams, Lotions, Lipsticks, Makeup foundations
- Environmental note
- Pentaerythrityl tetrastearate is biodegradable and not considered a microplastic, but as a synthetic compound, its production relies on petrochemical-derived pentaerythritol.
Good to know
- Pentaerythrityl tetrastearate is often used in lipsticks and lip balms to provide a smooth, even application.
- It is considered biodegradable and is not classified as a microplastic.
Common questions
What is Pentaerythrityl Tetrastearate in beauty products?
Pentaerythrityl tetrastearate is a synthetic ingredient made from pentaerythritol and stearic acid (a fatty acid found in plants and animals). In skincare, it acts as an emollient, meaning it softens and smooths the skin by forming a light, breathable film that reduces water loss. It also helps thicken products and gives them a luxurious, silky feel without leaving a heavy or greasy residue. Because it is non-comedogenic (does not clog pores) and has a very low irritation risk, it is commonly used in moisturizers, foundations, and lip products for all skin types, including sensitive and acne-prone skin.
What does Pentaerythrityl Tetrastearate do in a beauty product?
When applied to the skin, pentaerythrityl tetrastearate forms a thin, non-occlusive film that helps lock in moisture by reducing transepidermal water loss (water evaporating from the skin). It also improves the spreadability and slip of products, making them feel smooth and silky. Additionally, it helps stabilize emulsions (mixtures of oil and water) and can thicken formulations, giving creams and lotions a richer consistency.
Is Pentaerythrityl Tetrastearate safe for most people?
Pentaerythrityl tetrastearate is considered safe for use in cosmetics. It has a low irritation and sensitization potential and is non-comedogenic. The Cosmetic Ingredient Review panel has concluded it is safe in current usage concentrations.
Who should be careful with Pentaerythrityl Tetrastearate?
Individuals who strictly avoid synthetic ingredients in their skincare routine
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.