Ingredient review
Isopropylamine Dodecylbenzenesulfonate
INCI: ISOPROPYLAMINE DODECYLBENZENESULFONATE
A strong synthetic detergent that effectively removes oil and dirt but may be drying or irritating for sensitive skin.
In plain English
This is a man-made ingredient that helps cleansing products foam up and wash away oil and dirt. It's a type of surfactant, which means it works by breaking the surface tension between water and oil so they can mix and rinse away. Because it's quite strong, it can strip the skin of its natural oils, potentially leading to dryness or irritation, especially for those with sensitive or dry skin.
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
Isopropylamine Dodecylbenzenesulfonate 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 Isopropylamine Dodecylbenzenesulfonate.
- 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
Isopropylamine Dodecylbenzenesulfonate is a synthetic anionic surfactant. It is a salt formed from dodecylbenzenesulfonic acid and isopropylamine, designed to be a powerful cleansing agent. It is chemically similar to other alkylbenzene sulfonates used in industrial and personal care cleaning products.
How it works
In a cosmetic product, this ingredient reduces the surface tension between water and oil, allowing them to mix. This creates a stable emulsion that can trap dirt, sebum, and other impurities. When you rinse, the emulsified dirt is carried away, leaving the skin or hair clean. Its strong degreasing action makes it effective but also potentially harsh.
Pros
Strong cleanser
Effectively removes heavy oils, sebum, and waterproof makeup, making it useful for deep-cleaning products.
Good foam
Produces a rich, stable lather that many people associate with a satisfying cleansing experience.
Cons and cautions
Drying potential
Its strong degreasing action can strip the skin of natural oils, leading to tightness, dryness, and potential irritation over time.
Irritation risk
Rated as a moderate irritant, it may cause redness or stinging, especially on sensitive or compromised skin barriers.
Best for
- People with oily or very resilient skin who need deep cleansing
- Those using it in rinse-off products like body washes or shampoos
Use caution if
- Individuals with dry, sensitive, or eczema-prone skin
- Those who prefer gentle, sulfate-free cleansers
Usage tips
Safety summary
Isopropylamine Dodecylbenzenesulfonate is considered safe for use in rinse-off cosmetics at typical concentrations. However, it can be moderately irritating and drying, so it is not ideal for sensitive skin or frequent use without proper moisturizing.
Research notes
Studies on similar alkylbenzene sulfonates show they are effective cleansers but can disrupt the skin barrier with repeated use. Specific data on this exact compound is limited, but its chemical class is well-characterized as moderate irritants.
Common label clues
- Typical concentration
- Typically 1–10% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions, with concentration limits typically set by formulators to ensure safety.
- Common uses
- Shampoos, Body washes, Facial cleansers, Household detergents
- Environmental note
- While some alkylbenzene sulfonates are biodegradable, this specific compound may have moderate persistence in aquatic environments. Check product labeling for eco-certifications.
Good to know
- This ingredient is chemically related to linear alkylbenzene sulfonates (LAS), which are common in laundry detergents.
- It is not typically found in 'gentle' or 'sulfate-free' formulations.
Common questions
What is Isopropylamine Dodecylbenzenesulfonate in beauty products?
This is a man-made ingredient that helps cleansing products foam up and wash away oil and dirt. It's a type of surfactant, which means it works by breaking the surface tension between water and oil so they can mix and rinse away. Because it's quite strong, it can strip the skin of its natural oils, potentially leading to dryness or irritation, especially for those with sensitive or dry skin.
What does Isopropylamine Dodecylbenzenesulfonate do in a beauty product?
In a cosmetic product, this ingredient reduces the surface tension between water and oil, allowing them to mix. This creates a stable emulsion that can trap dirt, sebum, and other impurities. When you rinse, the emulsified dirt is carried away, leaving the skin or hair clean. Its strong degreasing action makes it effective but also potentially harsh.
Is Isopropylamine Dodecylbenzenesulfonate safe for most people?
Isopropylamine Dodecylbenzenesulfonate is considered safe for use in rinse-off cosmetics at typical concentrations. However, it can be moderately irritating and drying, so it is not ideal for sensitive skin or frequent use without proper moisturizing.
Who should be careful with Isopropylamine Dodecylbenzenesulfonate?
Individuals with dry, sensitive, or eczema-prone skin Those who prefer gentle, sulfate-free 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.