Ingredient review
Sorbeth-60 Tetrastearate
INCI: SORBETH-60 TETRASTEARATE
A reliable emulsifier that creates smooth, stable creams and lotions with low irritation potential.
In plain English
Sorbeth-60 Tetrastearate is a gentle helper ingredient that allows oil and water to mix together in your skincare products. Without it, creams and lotions would separate into oily and watery layers. It's made by combining a sugar-derived molecule (sorbitol) with fatty acids from plant oils, then adding a small amount of PEG (polyethylene glycol) to improve its mixing ability. This ingredient is known for being very mild on the skin and is often used in products for sensitive 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.
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
Sorbeth-60 Tetrastearate 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 Sorbeth-60 Tetrastearate.
- 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
Sorbeth-60 Tetrastearate is a semi-synthetic emulsifier created by reacting sorbitol (a sugar alcohol) with stearic acid (a fatty acid from plant or animal sources) and ethoxylating it with about 60 units of ethylene oxide. The result is a large molecule that can hold both water-loving and oil-loving parts, making it ideal for stabilizing emulsions.
How it works
In a cosmetic product, Sorbeth-60 Tetrastearate positions itself at the boundary between oil and water droplets. Its water-loving (hydrophilic) end stays in the water phase, while its oil-loving (lipophilic) end anchors in the oil phase. This reduces surface tension and prevents the two phases from separating, giving you a smooth, uniform cream or lotion that stays mixed over time.
Pros
Gentle on skin
Sorbeth-60 Tetrastearate has a very low irritation and comedogenic rating, making it safe for sensitive and acne-prone skin types.
Excellent stabilizer
It prevents creams and lotions from separating, ensuring you get a consistent texture and dose of active ingredients every time you use the product.
Cons and cautions
PEG-derived ingredient
Because it contains PEG (polyethylene glycol), some consumers prefer to avoid it due to concerns about manufacturing impurities, though cosmetic-grade PEGs are highly purified.
Not for ultra-low pH formulas
In very acidic products (pH below 4), its emulsifying ability may decrease, potentially leading to instability.
Best for
- Anyone looking for a gentle, non-irritating moisturizer or cream
- People with sensitive or reactive skin who need stable, simple formulas
Use caution if
- Those seeking completely PEG-free or 'clean beauty' formulations
Usage tips
Safety summary
Sorbeth-60 Tetrastearate is considered safe for use in cosmetics at typical concentrations. It has low skin irritation and sensitization potential. As with all PEG-containing ingredients, there is a theoretical concern about 1,4-dioxane contamination during manufacturing, but cosmetic-grade ingredients are purified to meet strict safety limits.
Research notes
Studies on similar PEG sorbitan esters show they are well-tolerated on skin and do not cause significant irritation or allergy. The ingredient's safety is supported by decades of use in personal care products. No specific recent clinical trials were found for this exact compound, but its class is well-established.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions. The Cosmetic Ingredient Review (CIR) panel has reviewed similar PEG sorbitan esters and found them safe as used.
- Common uses
- Moisturizers, Creams, Lotions, Sunscreens, Makeup removers
- Environmental note
- The PEG portion is derived from ethylene oxide, which is produced from fossil fuels. However, the ingredient is biodegradable and not considered bioaccumulative.
Good to know
- Sorbeth-60 Tetrastearate is often used in 'natural' formulas because its fatty acid portion can be plant-derived.
- It is considered a 'non-ionic' emulsifier, meaning it doesn't carry an electrical charge, which makes it compatible with many active ingredients.
Common questions
What is Sorbeth-60 Tetrastearate in beauty products?
Sorbeth-60 Tetrastearate is a gentle helper ingredient that allows oil and water to mix together in your skincare products. Without it, creams and lotions would separate into oily and watery layers. It's made by combining a sugar-derived molecule (sorbitol) with fatty acids from plant oils, then adding a small amount of PEG (polyethylene glycol) to improve its mixing ability. This ingredient is known for being very mild on the skin and is often used in products for sensitive skin.
What does Sorbeth-60 Tetrastearate do in a beauty product?
In a cosmetic product, Sorbeth-60 Tetrastearate positions itself at the boundary between oil and water droplets. Its water-loving (hydrophilic) end stays in the water phase, while its oil-loving (lipophilic) end anchors in the oil phase. This reduces surface tension and prevents the two phases from separating, giving you a smooth, uniform cream or lotion that stays mixed over time.
Is Sorbeth-60 Tetrastearate safe for most people?
Sorbeth-60 Tetrastearate is considered safe for use in cosmetics at typical concentrations. It has low skin irritation and sensitization potential. As with all PEG-containing ingredients, there is a theoretical concern about 1,4-dioxane contamination during manufacturing, but cosmetic-grade ingredients are purified to meet strict safety limits.
Who should be careful with Sorbeth-60 Tetrastearate?
Those seeking completely PEG-free or 'clean beauty' formulations
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.