Ingredient review
Disodium Steariminodipropionate
INCI: DISODIUM STEARIMINODIPROPIONATE
A mild, conditioning surfactant that cleans without stripping the skin's natural moisture barrier.
In plain English
Disodium Steariminodipropionate is a gentle cleansing ingredient that helps remove dirt and oil from your skin and hair without causing dryness or irritation. It's often used in sulfate-free formulas because it creates a soft, creamy lather and leaves the skin feeling smooth rather than tight. Think of it as a kinder alternative to harsher detergents like sodium lauryl sulfate.
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
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Disodium Steariminodipropionate 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 Disodium Steariminodipropionate.
- 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
Disodium Steariminodipropionate is a semi-synthetic surfactant made by combining stearic acid (a fatty acid found in vegetable oils) with an amino acid-like structure. It belongs to the class of amphoteric surfactants, meaning it can work in both acidic and alkaline conditions, making it versatile for various product pH levels.
How it works
In a cosmetic product, this ingredient reduces the surface tension between water and oil, allowing impurities to be lifted away and rinsed off. Its amphoteric nature also helps it deposit a thin conditioning film on skin and hair, reducing friction and leaving a soft, non-stripped feel.
Pros
Gentle on skin
Unlike harsh sulfates, this surfactant cleans without stripping the skin's natural oils, making it ideal for daily use on sensitive or dry skin.
Conditioning effect
It leaves a soft, smooth feel on skin and hair, reducing the need for additional moisturizers or conditioners in rinse-off products.
Cons and cautions
Lower foam volume
It produces a creamy but less bubbly lather compared to traditional sulfates, which may be less satisfying for those who associate foam with cleanliness.
Limited oil removal
On its own, it may not fully remove heavy makeup or stubborn oils, so it's often combined with other surfactants in cleansing formulas.
Best for
- People with dry or sensitive skin looking for a gentle cleanser
- Anyone seeking sulfate-free or mild cleansing products
Use caution if
- Those who prefer high-foaming, traditional sulfate cleansers
Usage tips
Safety summary
Disodium Steariminodipropionate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, and no significant safety concerns have been raised by regulatory bodies.
Research notes
Research supports its use as a mild surfactant with good skin compatibility. Studies indicate low eye and skin irritation compared to traditional anionic surfactants. However, long-term independent studies are limited.
Common label clues
- Typical concentration
- 1–10% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. No known restrictions at typical concentrations.
- Common uses
- Cleansers, Shampoos, Body washes, Facial washes
- Environmental note
- Derived from plant-based stearic acid, it is biodegradable and considered more environmentally friendly than some petroleum-based surfactants.
Good to know
- This ingredient is often found in 'sulfate-free' and 'gentle' labeled products.
- It is compatible with a wide pH range, making it easy to formulate with other active ingredients.
Common questions
What is Disodium Steariminodipropionate in beauty products?
Disodium Steariminodipropionate is a gentle cleansing ingredient that helps remove dirt and oil from your skin and hair without causing dryness or irritation. It's often used in sulfate-free formulas because it creates a soft, creamy lather and leaves the skin feeling smooth rather than tight. Think of it as a kinder alternative to harsher detergents like sodium lauryl sulfate.
What does Disodium Steariminodipropionate do in a beauty product?
In a cosmetic product, this ingredient reduces the surface tension between water and oil, allowing impurities to be lifted away and rinsed off. Its amphoteric nature also helps it deposit a thin conditioning film on skin and hair, reducing friction and leaving a soft, non-stripped feel.
Is Disodium Steariminodipropionate safe for most people?
Disodium Steariminodipropionate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, and no significant safety concerns have been raised by regulatory bodies.
Who should be careful with Disodium Steariminodipropionate?
Those who prefer high-foaming, traditional sulfate cleansers
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.