Ingredient review
Dimyristyl Phosphate
INCI: Dimyristyl Phosphate
A gentle synthetic emulsifier that helps blend oil and water in creams and lotions, with a low risk of irritation or clogged pores.
In plain English
Dimyristyl phosphate is a man-made ingredient that helps oil and water mix together smoothly in skincare products. It also helps the product feel nice on your skin and can improve how other ingredients are absorbed. It is considered very gentle and unlikely to cause irritation or breakouts.
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
Dimyristyl Phosphate 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 Dimyristyl Phosphate.
- 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
Dimyristyl phosphate is a phosphate ester derived from myristyl alcohol, a fatty alcohol. It is a synthetic compound used primarily as an emulsifier to stabilize oil-in-water emulsions, giving creams and lotions a smooth, uniform texture.
How it works
It works by reducing the surface tension between oil and water, allowing them to blend into a stable emulsion. This prevents the product from separating and gives it a creamy, spreadable consistency. It also has mild skin-conditioning properties, helping to leave the skin feeling soft and smooth.
Pros
Gentle on skin
Dimyristyl phosphate has a very low irritation risk, making it suitable for sensitive skin types and those prone to reactions.
Non-comedogenic
It does not clog pores, so it is a safe choice for acne-prone individuals who need emulsifiers in their moisturizers or sunscreens.
Cons and cautions
Synthetic origin
As a lab-created ingredient, it may not appeal to consumers who prefer naturally derived or plant-based emulsifiers.
Limited direct skin benefit
Its primary role is formulation support (emulsification) rather than providing active skincare benefits like hydration or anti-aging.
Best for
- Anyone looking for gentle, non-irritating moisturizers or cleansers
- People with sensitive or acne-prone skin who need a low-comedogenicity emulsifier
Use caution if
- Those who strictly avoid synthetic ingredients in their skincare routine
Usage tips
Safety summary
Dimyristyl phosphate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential and is non-comedogenic. Regulatory bodies like the CIR have reviewed it and found no significant safety concerns.
Research notes
Research on dimyristyl phosphate is limited but consistent with its use as a safe emulsifier. The Cosmetic Ingredient Review (CIR) expert panel has evaluated it and concluded it is safe in current usage patterns. No significant adverse effects have been reported in clinical or consumer use.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. The Cosmetic Ingredient Review (CIR) panel has deemed it safe as used in rinse-off and leave-on products.
- Common uses
- Moisturizers, Cleansers, Sunscreens, Anti-aging creams
- Environmental note
- As a synthetic compound, its environmental persistence is low, and it is not known to bioaccumulate. However, specific ecotoxicity data is limited.
Good to know
- Dimyristyl phosphate is often used alongside other emulsifiers to create a rich, luxurious texture without heaviness.
- It is considered safe by major cosmetic ingredient review panels at typical use concentrations.
Common questions
What is Dimyristyl Phosphate in beauty products?
Dimyristyl phosphate is a man-made ingredient that helps oil and water mix together smoothly in skincare products. It also helps the product feel nice on your skin and can improve how other ingredients are absorbed. It is considered very gentle and unlikely to cause irritation or breakouts.
What does Dimyristyl Phosphate do in a beauty product?
It works by reducing the surface tension between oil and water, allowing them to blend into a stable emulsion. This prevents the product from separating and gives it a creamy, spreadable consistency. It also has mild skin-conditioning properties, helping to leave the skin feeling soft and smooth.
Is Dimyristyl Phosphate safe for most people?
Dimyristyl phosphate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential and is non-comedogenic. Regulatory bodies like the CIR have reviewed it and found no significant safety concerns.
Who should be careful with Dimyristyl Phosphate?
Those 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.