Ingredient review
Stearyl Cerotate/Carnaubate
INCI: Stearyl Cerotate/Carnaubate
A gentle, non-irritating wax ester that improves texture and stability in balms and sticks.
In plain English
Stearyl Cerotate/Carnaubate is a wax-like ingredient made by combining stearyl alcohol with cerotic acid (from carnauba wax). It helps thicken products, gives a smooth, non-greasy feel, and keeps the formula stable. You'll often find it in lipsticks, lip balms, and stick foundations where a firm but spreadable texture is needed.
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
Stearyl Cerotate/Carnaubate 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 Stearyl Cerotate/Carnaubate.
- 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 synthetic ester of stearyl alcohol and cerotic acid, mimicking the properties of natural carnauba wax. It appears as a waxy solid at room temperature.
How it works
It acts as a structuring agent, increasing the viscosity and melting point of oils and butters. This helps solid products hold their shape while gliding on smoothly. It also forms a thin, protective film on skin or lips to lock in moisture.
Pros
Excellent texture enhancer
Gives lipsticks and balms a smooth, creamy feel that glides on without tugging, improving the user experience.
Stabilizes formulas
Helps maintain product shape and prevents oil separation, especially in warm conditions, extending shelf life.
Cons and cautions
Synthetic origin
Derived from synthetic and natural sources, which may not align with a '100% natural' skincare philosophy.
Potential heaviness at high levels
If used in very high concentrations, it can make products feel thick or waxy on the skin, though this is uncommon in well-formulated products.
Best for
- Anyone using lip balms or stick foundations
- Those who prefer non-greasy, long-wearing textures
Use caution if
- Those strictly avoiding synthetic ingredients
- Individuals with known sensitivity to wax esters (rare)
Usage tips
Safety summary
Considered safe for topical use with very low irritation and comedogenic potential. No significant safety concerns reported in cosmetic concentrations.
Research notes
Limited peer-reviewed studies specific to this ester, but its components (stearyl alcohol and cerotic acid) are well-studied and recognized as safe by cosmetic safety panels.
Common label clues
- Typical concentration
- 1–10%
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and US FDA as a safe cosmetic ingredient.
- Common uses
- Lipsticks, Lip balms, Stick foundations, Creams, Lotions
- Environmental note
- Synthetic production reduces reliance on natural wax harvesting, but it is not biodegradable in all conditions.
Good to know
- Often used as a vegan-friendly alternative to beeswax in some formulations.
- It is not water-soluble, so it's best for anhydrous or water-in-oil systems.
Common questions
What is Stearyl Cerotate/Carnaubate in beauty products?
Stearyl Cerotate/Carnaubate is a wax-like ingredient made by combining stearyl alcohol with cerotic acid (from carnauba wax). It helps thicken products, gives a smooth, non-greasy feel, and keeps the formula stable. You'll often find it in lipsticks, lip balms, and stick foundations where a firm but spreadable texture is needed.
What does Stearyl Cerotate/Carnaubate do in a beauty product?
It acts as a structuring agent, increasing the viscosity and melting point of oils and butters. This helps solid products hold their shape while gliding on smoothly. It also forms a thin, protective film on skin or lips to lock in moisture.
Is Stearyl Cerotate/Carnaubate safe for most people?
Considered safe for topical use with very low irritation and comedogenic potential. No significant safety concerns reported in cosmetic concentrations.
Who should be careful with Stearyl Cerotate/Carnaubate?
Those strictly avoiding synthetic ingredients Individuals with known sensitivity to wax esters (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.