Ingredient review
Oleth-82
INCI: OLETH-82
Oleth-82 is a synthetic emulsifier that helps mix oil and water in cleansers, but it may be slightly drying or irritating for very sensitive skin.
In plain English
Oleth-82 is a man-made ingredient that helps oil and water blend together in products like face washes and shampoos. It's part of a family of ingredients called ethoxylated alcohols, which are made by adding ethylene oxide to a fatty alcohol from plant oils. While it's effective at cleaning and creating a nice lather, it can sometimes strip the skin's natural moisture barrier if used too often, especially in high concentrations.
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
Oleth-82 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 Oleth-82.
- 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
Oleth-82 is a synthetic surfactant derived from oleyl alcohol (a fatty alcohol from plant sources like olive oil) that has been reacted with an average of 82 moles of ethylene oxide. This process makes it water-soluble and able to reduce surface tension, helping to disperse oils in water.
How it works
In a cosmetic product, Oleth-82 works by lowering the surface tension between oil and water, allowing them to mix into a stable emulsion. This helps cleansers and shampoos effectively remove dirt, oil, and makeup from the skin and hair. It also contributes to foam formation and product texture.
Pros
Effective emulsifier
Oleth-82 helps oil and water mix smoothly, so your cleanser or shampoo feels consistent and works well to remove dirt and makeup without leaving a greasy residue.
Improves foam texture
It enhances the lather in shampoos and body washes, making them feel more luxurious and satisfying to use, which can encourage better cleansing habits.
Cons and cautions
Potential for irritation
For people with sensitive or dry skin, Oleth-82 can be slightly stripping, leading to tightness or irritation after use, especially in high concentrations or frequent use.
Ethoxylation concerns
The manufacturing process may create trace levels of 1,4-dioxane, a potential carcinogen, though reputable brands purify their ingredients to keep levels very low.
Best for
- People with normal to oily skin looking for effective cleansers
- Those who use rinse-off products like shampoos and body washes
Use caution if
- Individuals with very dry, sensitive, or compromised skin barriers
Usage tips
Safety summary
Oleth-82 is considered safe for use in cosmetics at typical concentrations, but it may cause mild irritation in sensitive individuals. The main safety concern is potential contamination with 1,4-dioxane, which reputable manufacturers control through purification. Overall, it is a well-studied ingredient with a moderate safety profile.
Research notes
Research on Oleth-82 is limited, but it is similar to other ethoxylated alcohols that have been reviewed by safety panels. The Cosmetic Ingredient Review (CIR) has assessed related ingredients and found them safe when formulated to minimize impurities. No specific studies on Oleth-82 irritation or efficacy were found in major databases.
Common label clues
- Typical concentration
- Typically 0.5% to 5% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics in the US (FDA) and EU (CosIng) with no specific concentration restrictions, though manufacturers are encouraged to minimize 1,4-dioxane contamination.
- Common uses
- Cleansers, Shampoos, Conditioners, Body washes, Facial cleansers
- Environmental note
- Oleth-82 is synthetic and may not be readily biodegradable in all conditions, but it is not known to bioaccumulate significantly.
Good to know
- Oleth-82 is part of the Oleth family, where the number indicates the average moles of ethylene oxide added—higher numbers mean more water solubility.
- It is often used alongside other mild surfactants to balance cleansing power with gentleness.
Common questions
What is Oleth-82 in beauty products?
Oleth-82 is a man-made ingredient that helps oil and water blend together in products like face washes and shampoos. It's part of a family of ingredients called ethoxylated alcohols, which are made by adding ethylene oxide to a fatty alcohol from plant oils. While it's effective at cleaning and creating a nice lather, it can sometimes strip the skin's natural moisture barrier if used too often, especially in high concentrations.
What does Oleth-82 do in a beauty product?
In a cosmetic product, Oleth-82 works by lowering the surface tension between oil and water, allowing them to mix into a stable emulsion. This helps cleansers and shampoos effectively remove dirt, oil, and makeup from the skin and hair. It also contributes to foam formation and product texture.
Is Oleth-82 safe for most people?
Oleth-82 is considered safe for use in cosmetics at typical concentrations, but it may cause mild irritation in sensitive individuals. The main safety concern is potential contamination with 1,4-dioxane, which reputable manufacturers control through purification. Overall, it is a well-studied ingredient with a moderate safety profile.
Who should be careful with Oleth-82?
Individuals with very dry, sensitive, or compromised skin barriers
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.