Ingredient review
Disodium Laneth-5 Sulfosuccinate
INCI: DISODIUM LANETH-5 SULFOSUCCINATE
A gentle, lanolin-derived surfactant that cleanses effectively while being kind to sensitive and dry skin.
In plain English
Disodium Laneth-5 Sulfosuccinate is a mild cleansing ingredient made from lanolin (a natural oil from sheep's wool) and sulfosuccinic acid. It helps remove dirt and oil from your skin and hair without causing dryness or irritation, making it a popular choice for gentle cleansers and baby products.
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 Laneth-5 Sulfosuccinate 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 Laneth-5 Sulfosuccinate.
- 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
A semi-synthetic surfactant created by combining lanolin alcohol with sulfosuccinic acid, resulting in a mild cleansing agent that is less harsh than traditional sulfates.
How it works
It works by reducing the surface tension of water, allowing it to mix with oil and dirt so they can be rinsed away. Its large molecular structure makes it less penetrating and therefore less irritating to the skin barrier.
Pros
Very gentle on skin
Its large molecular structure means it stays on the surface and cleans without penetrating or irritating the skin barrier, making it ideal for sensitive skin.
Low risk of clogging pores
With a low comedogenic rating, it is unlikely to cause breakouts, even for acne-prone skin types.
Cons and cautions
Not vegan-friendly
Because it is derived from lanolin (sheep's wool), it is not suitable for vegans or those avoiding animal-derived ingredients.
Limited cleansing power alone
It may not effectively remove heavy makeup or waterproof sunscreen on its own and is often blended with other surfactants.
Best for
- People with sensitive or dry skin
- Those looking for a sulfate-free cleanser
- Parents choosing gentle baby care products
Use caution if
- Individuals with a known allergy to lanolin or wool-derived ingredients
Usage tips
Safety summary
Disodium Laneth-5 Sulfosuccinate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic risk, making it suitable for sensitive skin. However, individuals with wool allergies should exercise caution due to its lanolin origin.
Research notes
The Cosmetic Ingredient Review (CIR) panel has evaluated sulfosuccinates and found them safe as used in cosmetics. Studies indicate low skin irritation and sensitization potential, supporting its use in gentle formulations.
Common label clues
- Typical concentration
- 1–10% in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the US, EU, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Facial cleansers, Body washes, Shampoos, Baby care products
- Environmental note
- Derived from lanolin, a byproduct of wool production, and is generally considered biodegradable with low aquatic toxicity.
Good to know
- This ingredient is often found in 'sulfate-free' and 'gentle' formulas.
- It is considered biodegradable and environmentally friendlier than some harsher surfactants.
Common questions
What is Disodium Laneth-5 Sulfosuccinate in beauty products?
Disodium Laneth-5 Sulfosuccinate is a mild cleansing ingredient made from lanolin (a natural oil from sheep's wool) and sulfosuccinic acid. It helps remove dirt and oil from your skin and hair without causing dryness or irritation, making it a popular choice for gentle cleansers and baby products.
What does Disodium Laneth-5 Sulfosuccinate do in a beauty product?
It works by reducing the surface tension of water, allowing it to mix with oil and dirt so they can be rinsed away. Its large molecular structure makes it less penetrating and therefore less irritating to the skin barrier.
Is Disodium Laneth-5 Sulfosuccinate safe for most people?
Disodium Laneth-5 Sulfosuccinate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic risk, making it suitable for sensitive skin. However, individuals with wool allergies should exercise caution due to its lanolin origin.
Who should be careful with Disodium Laneth-5 Sulfosuccinate?
Individuals with a known allergy to lanolin or wool-derived ingredients
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.