Ingredient review
Hydrofluorocarbon 227ea
INCI: HYDROFLUOROCARBON 227EA
A synthetic propellant that helps spray products work smoothly, but it has a high global warming potential and is being phased out in some regions.
In plain English
Hydrofluorocarbon 227ea is a gas that turns into a liquid under pressure. In a spray can, it pushes the product out as a fine mist or foam. It doesn't stay on your skin—it evaporates into the air after you spray. Because it's a greenhouse gas, some brands are switching to more eco-friendly alternatives.
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
Hydrofluorocarbon 227ea 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 Hydrofluorocarbon 227ea.
- 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 colorless, odorless, non-flammable liquefied gas from the hydrofluorocarbon family, used as a propellant in aerosol cosmetics.
How it works
When you press the nozzle, the pressure drops and the liquid gas rapidly expands into a gas, forcing the product out of the can. It helps create a consistent spray pattern or foam texture without reacting with the other ingredients.
Pros
Effective spray delivery
Creates a consistent, fine mist that spreads product evenly over skin or hair without dripping.
Non-flammable
Unlike some hydrocarbon propellants (e.g., butane), HFC 227ea does not catch fire, making it safer around heat or flames.
Cons and cautions
High environmental impact
HFC 227ea is a potent greenhouse gas with a global warming potential thousands of times higher than carbon dioxide, contributing to climate change.
Regulatory phase-down
Under the Kigali Amendment and EU F-Gas Regulation, HFCs are being phased down, which may limit future availability and increase costs.
Best for
- Anyone using aerosol sunscreens or hair sprays who prioritizes convenience
- People who prefer non-flammable spray products
Use caution if
- Environmentally conscious consumers looking to minimize their carbon footprint
- Those in regions with strict F-gas regulations (e.g., EU F-Gas Regulation)
Usage tips
Safety summary
Generally recognized as safe for topical use in cosmetics when used as a propellant. It evaporates quickly and does not accumulate in the body. However, inhalation of concentrated spray may cause dizziness or throat irritation, so use in well-ventilated areas.
Research notes
Studies focus on its environmental impact rather than skin safety. The Cosmetic Ingredient Review (CIR) has not published a specific safety assessment for HFC 227ea, but it is widely used in consumer aerosols with a long history of safe topical use. Research on alternatives is growing due to regulatory pressure.
Common label clues
- Typical concentration
- 1–15% of the total product weight
- Regulatory status
- Approved for cosmetic use in the EU, US, and many other countries, but subject to phase-down under the Kigali Amendment to the Montreal Protocol. The EU F-Gas Regulation restricts its use and requires labeling of global warming potential.
- Common uses
- Aerosol sprays, Foaming mousses, Hair sprays, Sunscreen sprays
- Environmental note
- HFC 227ea has a global warming potential (GWP) of 3,220, meaning it traps over 3,000 times more heat than CO₂ over 100 years. It is not ozone-depleting but contributes significantly to climate change.
Good to know
- HFC 227ea is also used in medical inhalers for asthma, but cosmetic use is being reduced due to environmental concerns.
- Some brands now label their aerosols as 'HFC-free' to appeal to eco-conscious buyers.
Common questions
What is Hydrofluorocarbon 227ea in beauty products?
Hydrofluorocarbon 227ea is a gas that turns into a liquid under pressure. In a spray can, it pushes the product out as a fine mist or foam. It doesn't stay on your skin—it evaporates into the air after you spray. Because it's a greenhouse gas, some brands are switching to more eco-friendly alternatives.
What does Hydrofluorocarbon 227ea do in a beauty product?
When you press the nozzle, the pressure drops and the liquid gas rapidly expands into a gas, forcing the product out of the can. It helps create a consistent spray pattern or foam texture without reacting with the other ingredients.
Is Hydrofluorocarbon 227ea safe for most people?
Generally recognized as safe for topical use in cosmetics when used as a propellant. It evaporates quickly and does not accumulate in the body. However, inhalation of concentrated spray may cause dizziness or throat irritation, so use in well-ventilated areas.
Who should be careful with Hydrofluorocarbon 227ea?
Environmentally conscious consumers looking to minimize their carbon footprint Those in regions with strict F-gas regulations (e.g., EU F-Gas Regulation)
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.