Ingredient review
Polyglyceryl-5 Stearate
INCI: Polyglyceryl-5 Stearate
A mild, plant-derived emulsifier that creates stable, silky creams without common irritation concerns.
In plain English
Polyglyceryl-5 Stearate is a helper ingredient that allows water and oil to mix together in a cream or lotion. It is made from glycerin (a natural moisturizer) and stearic acid (a fatty acid found in plants). Unlike some older emulsifiers, it is very gentle on the skin and leaves a smooth, non-greasy feel. You'll find it in many modern moisturizers and serums where a light texture is desired.
Review score
Safety, usefulness, and evidence
Strong fit for many routines
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
Quick decision guide
Easy yes for most routines
Polyglyceryl-5 Stearate 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 Polyglyceryl-5 Stearate.
- 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 non-ionic emulsifier made by combining polyglycerin (a chain of glycerin units) with stearic acid. It belongs to the polyglyceryl ester family, known for being mild and biodegradable.
How it works
It reduces the surface tension between oil and water, allowing them to form a stable mixture (emulsion). This creates a uniform cream or lotion that spreads easily and delivers both water-soluble and oil-soluble ingredients to the skin.
Pros
Very gentle on skin
Polyglyceryl-5 Stearate has a low irritation risk, making it a great choice for sensitive skin types and for use around the eyes.
Light, silky feel
It helps create creams that absorb quickly without leaving a heavy or sticky residue, improving the user experience.
Cons and cautions
Limited for high-oil formulas
In very rich, oil-heavy products, this emulsifier may need help from other stabilizers to keep the mixture from separating.
Not fully natural
Although derived from plant sources, it undergoes chemical processing, so it may not appeal to those seeking 100% natural ingredients.
Best for
- Anyone looking for a gentle, non-irritating moisturizer or cream
- People with sensitive or reactive skin who avoid common emulsifiers like ceteareth or polysorbates
Use caution if
- Those who strictly avoid any processed or semi-synthetic ingredients (though it is derived from natural sources)
Usage tips
Safety summary
Polyglyceryl-5 Stearate is considered very safe for topical use. It has a low irritation and comedogenic risk, and no significant safety concerns have been reported in cosmetic concentrations. The Cosmetic Ingredient Review (CIR) panel has reviewed similar polyglyceryl esters and found them safe as used.
Research notes
Research on polyglyceryl esters indicates they are mild, non-irritating, and effective emulsifiers. While specific studies on Polyglyceryl-5 Stearate are limited, the broader class is well-documented for safety and performance in cosmetic formulations.
Common label clues
- Typical concentration
- 1% to 5% of the formula
- Regulatory status
- Approved for use in cosmetics worldwide, including by the EU CosIng database and the US FDA (as part of generally recognized safe ingredients). No concentration restrictions are typical for this ingredient.
- Common uses
- Moisturizers, Creams, Lotions, Serums
- Environmental note
- Biodegradable and derived from plant-based glycerin and stearic acid, making it a more sustainable choice compared to petroleum-based emulsifiers.
Good to know
- Polyglyceryl-5 Stearate is part of a family of emulsifiers that are considered more skin-friendly than traditional ethoxylated emulsifiers.
- It is often used in 'natural' or 'clean' beauty products because it is biodegradable and derived from renewable sources.
Common questions
What is Polyglyceryl-5 Stearate in beauty products?
Polyglyceryl-5 Stearate is a helper ingredient that allows water and oil to mix together in a cream or lotion. It is made from glycerin (a natural moisturizer) and stearic acid (a fatty acid found in plants). Unlike some older emulsifiers, it is very gentle on the skin and leaves a smooth, non-greasy feel. You'll find it in many modern moisturizers and serums where a light texture is desired.
What does Polyglyceryl-5 Stearate do in a beauty product?
It reduces the surface tension between oil and water, allowing them to form a stable mixture (emulsion). This creates a uniform cream or lotion that spreads easily and delivers both water-soluble and oil-soluble ingredients to the skin.
Is Polyglyceryl-5 Stearate safe for most people?
Polyglyceryl-5 Stearate is considered very safe for topical use. It has a low irritation and comedogenic risk, and no significant safety concerns have been reported in cosmetic concentrations. The Cosmetic Ingredient Review (CIR) panel has reviewed similar polyglyceryl esters and found them safe as used.
Who should be careful with Polyglyceryl-5 Stearate?
Those who strictly avoid any processed or semi-synthetic ingredients (though it is derived from natural sources)
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.