Ingredient review
C12-15 Isoparaffin
INCI: C12-15 Isoparaffin
A lightweight synthetic oil that helps products spread smoothly and leaves skin feeling soft without greasiness.
In plain English
C12-15 Isoparaffin is a man-made oil derived from petroleum. It is very lightweight and evaporates quickly from the skin, so it doesn't feel heavy or sticky. In skincare, it helps other ingredients spread evenly and makes the product feel silky. It also helps dissolve certain ingredients that don't mix well with water. Because it's non-greasy and generally non-irritating, it's common in lotions, makeup removers, and lip balms.
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
C12-15 Isoparaffin 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 C12-15 Isoparaffin.
- 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 hydrocarbon mixture of isoparaffins with carbon chain lengths between 12 and 15. It is a clear, odorless liquid that mimics the feel of natural oils but is more stable and less likely to go rancid.
How it works
It sits on the skin's surface to soften and smooth the outer layer, reducing water loss. Its low viscosity allows it to spread easily, creating a thin, even film that helps other ingredients stay in place. As a solvent, it helps dissolve waxy or oily ingredients into a uniform formula.
Pros
Lightweight feel
It evaporates quickly and leaves no heavy residue, making it ideal for daytime moisturizers and makeup removers.
Improves spreadability
Helps creams and lotions glide on smoothly, so you need less product to cover your face.
Cons and cautions
Petroleum-derived
It is made from crude oil, which may be a concern for those seeking natural or sustainable ingredients.
Not deeply hydrating
It works on the surface and doesn't add moisture to deeper skin layers, so it may not be enough for very dry skin alone.
Best for
- People with normal to oily skin who want lightweight moisture
- Anyone who prefers non-greasy textures in lotions or makeup removers
Use caution if
- Those who strictly avoid petroleum-derived ingredients
- People with very dry skin who need richer emollients
Usage tips
Safety summary
C12-15 Isoparaffin is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic risk, making it suitable for most skin types. However, those who prefer to avoid petroleum-derived ingredients may choose alternatives.
Research notes
The Cosmetic Ingredient Review (CIR) panel reviewed isoparaffins and concluded they are safe as used in cosmetics. Studies show low skin irritation and sensitization potential. No significant health concerns have been identified from topical use.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. The Cosmetic Ingredient Review (CIR) panel has deemed it safe for use in rinse-off and leave-on products at typical concentrations.
- Common uses
- Moisturizers, Makeup removers, Lip products, Sunscreens
- Environmental note
- As a petroleum derivative, its production has a higher carbon footprint than plant-based alternatives. It is not biodegradable and may persist in the environment.
Good to know
- It is often used in makeup removers because it dissolves waterproof makeup without stripping the skin.
- Unlike some natural oils, it has a very long shelf life and does not oxidize or go rancid.
Common questions
What is C12-15 Isoparaffin in beauty products?
C12-15 Isoparaffin is a man-made oil derived from petroleum. It is very lightweight and evaporates quickly from the skin, so it doesn't feel heavy or sticky. In skincare, it helps other ingredients spread evenly and makes the product feel silky. It also helps dissolve certain ingredients that don't mix well with water. Because it's non-greasy and generally non-irritating, it's common in lotions, makeup removers, and lip balms.
What does C12-15 Isoparaffin do in a beauty product?
It sits on the skin's surface to soften and smooth the outer layer, reducing water loss. Its low viscosity allows it to spread easily, creating a thin, even film that helps other ingredients stay in place. As a solvent, it helps dissolve waxy or oily ingredients into a uniform formula.
Is C12-15 Isoparaffin safe for most people?
C12-15 Isoparaffin is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic risk, making it suitable for most skin types. However, those who prefer to avoid petroleum-derived ingredients may choose alternatives.
Who should be careful with C12-15 Isoparaffin?
Those who strictly avoid petroleum-derived ingredients People with very dry skin who need richer emollients
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.