Ingredient review
Myristamide DEA
INCI: MYRISTAMIDE DEA
Myristamide DEA is a synthetic foam booster that can make cleansers feel richer, but it may cause irritation for sensitive skin and has raised some environmental concerns.
In plain English
Myristamide DEA is a man-made ingredient added to liquid soaps and shampoos to create a thick, creamy lather. It helps the product feel luxurious and spread easily, but it can be drying or irritating for some people, especially those with sensitive skin. It is not a moisturizer or active treatment ingredient.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is moderate; clogging risk is low.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Myristamide DEA can be useful, but watch for some irritation potential.
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 Myristamide DEA.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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
Myristamide DEA is a diethanolamide of myristic acid, produced by reacting myristic acid (a fatty acid from coconut or palm oil) with diethanolamine. It is a synthetic surfactant and foam stabilizer.
How it works
In a cosmetic product, Myristamide DEA sits at the interface between oil and water, helping to stabilize foam bubbles and increase the thickness of the liquid. This makes the product feel more substantial and produces a richer lather when mixed with water.
Pros
Improves lather quality
Creates a dense, stable foam that many people associate with effective cleansing, making the product feel more satisfying to use.
Thickens formulas naturally
Increases the viscosity of liquid cleansers without needing additional thickeners, giving a rich, creamy texture that spreads easily.
Cons and cautions
Can irritate sensitive skin
May cause stinging, redness, or dryness for those with compromised skin barriers or conditions like rosacea or eczema, especially in high concentrations.
Environmental concerns
As a diethanolamide, it may break down into compounds that are persistent in water systems and have raised ecological questions, though it is generally considered safe at low levels.
Best for
- People who enjoy a rich, foamy cleanser and do not have sensitive skin
- Those using rinse-off products like shampoo or body wash occasionally
Use caution if
- Individuals with sensitive, reactive, or eczema-prone skin
- Anyone looking for a sulfate-free or ultra-gentle cleansing routine
Usage tips
Safety summary
Myristamide DEA is considered safe for use in rinse-off cosmetics at typical concentrations by major regulatory bodies. However, it can cause mild to moderate skin irritation in sensitive individuals and is not recommended for leave-on products. Environmental concerns exist regarding its breakdown products.
Research notes
Research indicates Myristamide DEA is an effective foam booster and thickener. Studies on diethanolamine derivatives show low acute toxicity but potential for skin irritation. The CIR panel reviewed data and concluded it is safe in rinse-off products up to 5%. More recent research focuses on environmental fate and alternatives.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US (FDA) and EU (CosIng) within concentration limits. The Cosmetic Ingredient Review (CIR) panel has deemed it safe in rinse-off products at typical levels, but notes potential irritation at higher concentrations.
- Common uses
- Shampoos, Body washes, Facial cleansers, Bubble baths
- Environmental note
- Myristamide DEA is derived from coconut or palm oil, which may involve deforestation concerns. Additionally, its biodegradation can produce diethanolamine, which has raised environmental persistence questions.
Good to know
- Myristamide DEA is often found in products labeled as 'creamy' or 'luxurious' lather.
- It is not a sulfate, but it can still be stripping for some skin types.
- Many brands are moving toward plant-based alternatives like cocamidopropyl betaine.
Common questions
What is Myristamide DEA in beauty products?
Myristamide DEA is a man-made ingredient added to liquid soaps and shampoos to create a thick, creamy lather. It helps the product feel luxurious and spread easily, but it can be drying or irritating for some people, especially those with sensitive skin. It is not a moisturizer or active treatment ingredient.
What does Myristamide DEA do in a beauty product?
In a cosmetic product, Myristamide DEA sits at the interface between oil and water, helping to stabilize foam bubbles and increase the thickness of the liquid. This makes the product feel more substantial and produces a richer lather when mixed with water.
Is Myristamide DEA safe for most people?
Myristamide DEA is considered safe for use in rinse-off cosmetics at typical concentrations by major regulatory bodies. However, it can cause mild to moderate skin irritation in sensitive individuals and is not recommended for leave-on products. Environmental concerns exist regarding its breakdown products.
Who should be careful with Myristamide DEA?
Individuals with sensitive, reactive, or eczema-prone skin Anyone looking for a sulfate-free or ultra-gentle cleansing 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.