Ingredient review
Polyglyceryl-3 Di-Hydroxystearate
INCI: Polyglyceryl-3 Di-Hydroxystearate
A mild, plant-derived emulsifier that creates smooth, stable formulas without stripping the skin.
In plain English
This ingredient is a helper that allows water and oil to mix together in your lotions and creams. Without it, products would separate into watery and oily layers. It is made from glycerin and fatty acids, so it is very gentle and unlikely to cause irritation or clog pores.
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-3 Di-Hydroxystearate 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-3 Di-Hydroxystearate.
- 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 semi-synthetic emulsifier made by combining glycerin with hydroxystearic acid, a fatty acid derived from castor oil. It belongs to the polyglyceryl ester family, known for being mild and compatible with sensitive skin.
How it works
It reduces the surface tension between water and oil droplets, allowing them to form a stable, uniform mixture. This creates a smooth, creamy texture that spreads easily and feels lightweight on the skin.
Pros
Very gentle on skin
Unlike some harsh emulsifiers, this ingredient has a low irritation risk and is well-tolerated even by sensitive skin types.
Lightweight texture
It helps create creams and lotions that feel silky and non-greasy, making them comfortable for daily use under makeup or sunscreen.
Cons and cautions
Limited to specific pH ranges
It works best in formulations with a pH between 4 and 8, so it may not be ideal for very acidic or alkaline products.
Not a standalone thickener
It primarily acts as an emulsifier, so products using it may still need additional thickeners for a rich, heavy cream texture.
Best for
- Anyone looking for a gentle, non-irritating moisturizer or sunscreen
- People with sensitive or acne-prone skin who want a lightweight, non-greasy texture
Use caution if
- Those with known allergies to castor oil derivatives (rare)
Usage tips
Safety summary
Polyglyceryl-3 Di-Hydroxystearate is considered safe for use in cosmetics. It has a low irritation and comedogenic risk, making it suitable for sensitive and acne-prone skin. No significant safety concerns have been reported in regulatory reviews.
Research notes
Research on polyglyceryl esters indicates they are mild and effective emulsifiers. Specific studies on this ingredient are limited, but the broader class is well-documented for safety and efficacy in cosmetic formulations.
Common label clues
- Typical concentration
- 1% to 5%
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA as a safe cosmetic ingredient.
- Common uses
- Moisturizers, Sunscreens, Makeup removers, Serums
- Environmental note
- Derived from castor oil and glycerin, both renewable plant sources. It is biodegradable and not known to accumulate in the environment.
Good to know
- Polyglyceryl-3 Di-Hydroxystearate is often used in 'natural' or 'clean' beauty products because it is derived from plant sources.
- It is a common alternative to PEG-based emulsifiers, which some consumers prefer to avoid.
Common questions
What is Polyglyceryl-3 Di-Hydroxystearate in beauty products?
This ingredient is a helper that allows water and oil to mix together in your lotions and creams. Without it, products would separate into watery and oily layers. It is made from glycerin and fatty acids, so it is very gentle and unlikely to cause irritation or clog pores.
What does Polyglyceryl-3 Di-Hydroxystearate do in a beauty product?
It reduces the surface tension between water and oil droplets, allowing them to form a stable, uniform mixture. This creates a smooth, creamy texture that spreads easily and feels lightweight on the skin.
Is Polyglyceryl-3 Di-Hydroxystearate safe for most people?
Polyglyceryl-3 Di-Hydroxystearate is considered safe for use in cosmetics. It has a low irritation and comedogenic risk, making it suitable for sensitive and acne-prone skin. No significant safety concerns have been reported in regulatory reviews.
Who should be careful with Polyglyceryl-3 Di-Hydroxystearate?
Those with known allergies to castor oil derivatives (rare)
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.