Ingredient review
Sodium Laureth-5 Carboxylate
INCI: Sodium Laureth-5 Carboxylate
A gentle, low-irritation surfactant that effectively cleanses without stripping the skin's natural moisture barrier.
In plain English
Sodium Laureth-5 Carboxylate is a mild cleansing ingredient often used in soaps and shampoos. It helps remove dirt and oil from your skin and hair without causing the tight, dry feeling that harsher cleansers can leave behind. Think of it as a gentle friend that gets the job done without being too rough.
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
Sodium Laureth-5 Carboxylate 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 Sodium Laureth-5 Carboxylate.
- 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
Sodium Laureth-5 Carboxylate is a semi-synthetic surfactant derived from lauryl alcohol (from coconut or palm oil) and ethylene oxide, then carboxylated. It belongs to the ether carboxylate family, known for their mildness and excellent foaming properties.
How it works
In a cosmetic product, this ingredient works by reducing the surface tension between water and oil, allowing dirt and sebum to be rinsed away. Its carboxylate group gives it a gentle, non-stripping character, making it suitable for sensitive skin and frequent use.
Pros
Very gentle on skin
Its mild surfactant profile makes it ideal for sensitive or reactive skin, reducing the risk of irritation and dryness compared to sulfates.
Good foam quality
Produces a rich, creamy lather that feels pleasant during cleansing, enhancing the user experience without harshness.
Cons and cautions
Not fully natural
As a semi-synthetic ingredient, it undergoes chemical processing that may not align with clean beauty or natural product preferences.
Limited heavy-duty cleansing
May struggle to remove heavy makeup or waterproof sunscreen on its own, often requiring co-surfactants for thorough cleansing.
Best for
- People with dry or sensitive skin
- Those looking for a gentle daily cleanser
- Individuals with eczema or rosacea (patch test first)
Use caution if
- Those seeking a completely natural or organic ingredient list
- People with known allergies to ethoxylated compounds (rare)
Usage tips
Safety summary
Sodium Laureth-5 Carboxylate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, making it suitable for sensitive skin. No significant safety concerns have been raised by regulatory bodies.
Research notes
Research supports the mildness of ether carboxylates compared to traditional sulfates. Studies indicate low skin irritation and good compatibility with other surfactants. However, long-term environmental impact data is limited.
Common label clues
- Typical concentration
- 1% to 15% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. Generally recognized as safe when used as directed.
- Common uses
- Facial cleansers, Body washes, Shampoos, Baby care products
- Environmental note
- Biodegradability varies; some ether carboxylates are readily biodegradable, but ethoxylated compounds may raise environmental concerns in certain contexts.
Good to know
- Often found in sulfate-free and baby-friendly formulations.
- Can be derived from renewable plant sources like coconut or palm oil.
Common questions
What is Sodium Laureth-5 Carboxylate in beauty products?
Sodium Laureth-5 Carboxylate is a mild cleansing ingredient often used in soaps and shampoos. It helps remove dirt and oil from your skin and hair without causing the tight, dry feeling that harsher cleansers can leave behind. Think of it as a gentle friend that gets the job done without being too rough.
What does Sodium Laureth-5 Carboxylate do in a beauty product?
In a cosmetic product, this ingredient works by reducing the surface tension between water and oil, allowing dirt and sebum to be rinsed away. Its carboxylate group gives it a gentle, non-stripping character, making it suitable for sensitive skin and frequent use.
Is Sodium Laureth-5 Carboxylate safe for most people?
Sodium Laureth-5 Carboxylate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential, making it suitable for sensitive skin. No significant safety concerns have been raised by regulatory bodies.
Who should be careful with Sodium Laureth-5 Carboxylate?
Those seeking a completely natural or organic ingredient list People with known allergies to ethoxylated compounds (rare)
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.