Ingredient review
PPG-38 Steareth-6
INCI: PPG-38 Steareth-6
A safe, effective emulsifier that helps keep your products smooth and stable, but it's purely synthetic and offers no skin benefits beyond formulation.
In plain English
PPG-38 Steareth-6 is a man-made ingredient that helps oil and water mix together in your skincare products. Without emulsifiers like this, your lotion or cream would separate into an oily layer and a watery layer. It's not an active ingredient that treats your skin—it's a helper that makes the product feel smooth and consistent every time you use it.
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
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
PPG-38 Steareth-6 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 PPG-38 Steareth-6.
- 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
PPG-38 Steareth-6 is a synthetic polymer derived from propylene glycol and stearyl alcohol. It belongs to a class of ingredients called emulsifiers, which allow water and oil to form a stable, uniform mixture.
How it works
This molecule has both water-loving (hydrophilic) and oil-loving (lipophilic) parts. When you shake or mix a product, it positions itself at the boundary between oil and water droplets, preventing them from separating. This keeps your cream or lotion smooth and uniform from the first pump to the last.
Pros
Stable formulas
Prevents your cream or lotion from separating into oil and water, so you get the same texture every time.
Gentle on skin
Low irritation and comedogenic risk, making it suitable for most skin types, including sensitive skin.
Cons and cautions
Synthetic origin
Not derived from natural sources, which may be a drawback if you prefer plant-based or naturally derived ingredients.
No active benefit
It doesn't hydrate, soothe, or treat the skin—it's purely a formulation helper, so it won't improve your skin's condition on its own.
Best for
- Anyone using emulsified products like creams and lotions
- People who want reliable, consistent product texture
Use caution if
- Those seeking exclusively natural or plant-based ingredients
Usage tips
Safety summary
PPG-38 Steareth-6 is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. No significant safety concerns have been reported in regulatory reviews.
Research notes
Safety assessments by the Cosmetic Ingredient Review (CIR) panel have evaluated similar PPG and steareth compounds and found them safe for use in rinse-off and leave-on products at concentrations up to 10%. No specific studies on PPG-38 Steareth-6 alone were identified, but its chemical class is well-studied.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database at typical concentrations.
- Common uses
- Moisturizers, Cleansers, Sunscreens, Hair conditioners
- Environmental note
- As a synthetic polymer, it may not be biodegradable. However, it is used in small amounts and is not known to accumulate in the environment.
Good to know
- PPG-38 Steareth-6 is considered safe by major regulatory bodies at typical use levels.
- It's often used alongside other emulsifiers to fine-tune product feel.
Common questions
What is PPG-38 Steareth-6 in beauty products?
PPG-38 Steareth-6 is a man-made ingredient that helps oil and water mix together in your skincare products. Without emulsifiers like this, your lotion or cream would separate into an oily layer and a watery layer. It's not an active ingredient that treats your skin—it's a helper that makes the product feel smooth and consistent every time you use it.
What does PPG-38 Steareth-6 do in a beauty product?
This molecule has both water-loving (hydrophilic) and oil-loving (lipophilic) parts. When you shake or mix a product, it positions itself at the boundary between oil and water droplets, preventing them from separating. This keeps your cream or lotion smooth and uniform from the first pump to the last.
Is PPG-38 Steareth-6 safe for most people?
PPG-38 Steareth-6 is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. No significant safety concerns have been reported in regulatory reviews.
Who should be careful with PPG-38 Steareth-6?
Those seeking exclusively natural or plant-based 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.