Ingredient review
Polyglyceryl-3 Myristate
INCI: POLYGLYCERYL-3 MYRISTATE
A mild, plant-derived emulsifier that helps create stable, creamy textures without stripping the skin.
In plain English
Polyglyceryl-3 Myristate is a gentle emulsifier made from glycerin (a natural humectant) and myristic acid (a fatty acid found in coconut and palm oils). Its job is to help oil and water mix together in a product, so you get a smooth, stable cream or lotion that doesn't separate. Because it's derived from mild ingredients, it's considered very skin-friendly 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 Myristate 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 Myristate.
- 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 created by combining glycerin with myristic acid. It belongs to the polyglyceryl ester family, known for being gentle and biodegradable.
How it works
It reduces the surface tension between oil and water, allowing them to blend into a stable emulsion. This creates a uniform, creamy texture that spreads easily and helps deliver both water-soluble and oil-soluble ingredients to the skin.
Pros
Gentle on skin
Polyglyceryl-3 Myristate has a low irritation risk, making it a good choice for sensitive skin types and daily-use products.
Improves product feel
It helps create a smooth, non-greasy texture that spreads easily and leaves a pleasant after-feel on the skin.
Cons and cautions
Sourcing concerns
It is often derived from palm or coconut oil, which can involve environmental issues like deforestation unless sustainably sourced.
Limited standalone benefit
As an emulsifier, it doesn't directly moisturize or treat skin conditions; its main role is to improve product stability and texture.
Best for
- Anyone looking for a gentle, non-irritating moisturizer or cleanser
- People with sensitive or reactive skin who want to avoid harsh emulsifiers
Use caution if
- Those with a known allergy to any component of the ingredient (extremely rare)
Usage tips
Safety summary
Polyglyceryl-3 Myristate is widely regarded as safe for topical use. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in cosmetic concentrations.
Research notes
Research on polyglyceryl esters indicates they are mild, effective emulsifiers with good skin compatibility. Specific studies on Polyglyceryl-3 Myristate are limited, but the broader class is well-documented as safe and gentle.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics worldwide, including by the FDA (as a generally recognized safe ingredient) and under EU cosmetics regulations.
- Common uses
- Moisturizers, Cleansers, Serums, Sunscreens
- Environmental note
- Derived from plant oils; sustainability depends on sourcing practices. Look for RSPO-certified palm oil or coconut oil sources when possible.
Good to know
- Polyglyceryl esters are often used as alternatives to ethoxylated emulsifiers, which can be harsher.
- It is considered biodegradable and has a favorable environmental profile compared to some synthetic emulsifiers.
Common questions
What is Polyglyceryl-3 Myristate in beauty products?
Polyglyceryl-3 Myristate is a gentle emulsifier made from glycerin (a natural humectant) and myristic acid (a fatty acid found in coconut and palm oils). Its job is to help oil and water mix together in a product, so you get a smooth, stable cream or lotion that doesn't separate. Because it's derived from mild ingredients, it's considered very skin-friendly and unlikely to cause irritation or clog pores.
What does Polyglyceryl-3 Myristate do in a beauty product?
It reduces the surface tension between oil and water, allowing them to blend into a stable emulsion. This creates a uniform, creamy texture that spreads easily and helps deliver both water-soluble and oil-soluble ingredients to the skin.
Is Polyglyceryl-3 Myristate safe for most people?
Polyglyceryl-3 Myristate is widely regarded as safe for topical use. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in cosmetic concentrations.
Who should be careful with Polyglyceryl-3 Myristate?
Those with a known allergy to any component of the ingredient (extremely 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.