Clip-in extensions can transform your look with instant volume and length, but is it safe to curl or straighten them?
In short: Yes! But only if you follow the right steps.
Using heat to style your clip-in extensions is possible but without using proper technique, it can cause dryness, frizz, or irreversible damage. If you want to achieve beautiful, long-lasting styles without harming your extensions, you need to follow a few key rules.
In this guide, we’ll cover the do’s and don’ts of heat styling clip-in hair extensions, the best methods for curling and straightening, and how to protect your extensions from heat damage.
Can You Heat Style Clip-In Hair Extensions?
Yes, but it’s crucial they’re made from 100% Remy human hair!
All MHE clip-in extensions are made from human hair, which can be curled or straightened safely as they respond similarly to our natural hair.
Synthetic hair extensions cannot withstand heat as well and can become damaged and frizzy as a result.
Temperature limits
- Human hair extensions should stay below 180°C for best results.
- Synthetic extensions should avoid heat altogether and not risk ruining the extensions.
Risks of overheating
Too much heat can cause split ends, dryness and colour fading on your extensions. While it may be temping, frequent styling can shorten the lifespan of the extensions, so it’s important to styling only when necessary.
MHE Tip: Always test a small section of hair before heat styling your extensions to avoid accidental damage.
The Do’s and Don’ts of Heat Styling Clip-In Extensions
✅ Do’s: The right way to heat style clip-in extensions
- Use a heat protectant primer which shields extensions from damage
- Style at a low to medium heat below 180°C
- Use a heat-safe brush or comb which helps prevent snags and breakage
- Let extensions full cool after styling to lock in the style
❌ Don’ts: What to avoid when heat styling clip-ins
- Never use excessive heat as this can cause dryness, frizz and a shortened lifespan of the extensions.
- Don’t apply heat to synthetic extensions as they can melt and damage easily.
- Avoid using too much product before styling which can cause buildup and weigh down the hair.
- Never tug or pull while straightening as this can loosen clips or damage the wefts.
- Don’t style extensions when wet as this can cause irreversible damage.
MHE Tip: Always work in small sections of hair and be gentle when styling extensions to prevent breakage.
How to Curl Clip-In Hair Extensions
If you want bouncy curls or waves with your clip-in extensions, follow these steps for the best results.
Step 1: Prep the extensions
- Brush out tangles before starting.
- Spray with a light heat protectant mist.
Step 2: Use a curling wand or iron
- Select a heat under 180°C.
- Wrap a small section around the barrel and hold for no longer than 8-10 seconds.
Step 3: Pin the curls while cooling
- Use a hair clip to hold the curl in place until it cools.
Step 4: Lightly brush & set
- Once cool, gently brush through curls for a softer, more natural look.
- Apply a light hold hairspray if needed.
How to Straighten Clip-In Hair Extensions
For a sleek & polished look, straightening your clip-in hair extensions is a great option. Follow these steps for the best results.
Step 1: Prep the extensions
- Brush to remove knots and tangles
- Apply heat protectant primer for extra protection
Step 2: Set the right temperature
- Use a ceramic or titanium flat iron with a low to medium heat setting (max of 180°C)
Step 3: Work in sections
- Straighten your hair in small sections for a smooth finish.
- Use a comb while straightening to guide the hair.
Step 4: Apply finishing products
- Use a tiny amount of hair serum or oil to add shine and reduce frizz.
- Avoid using too much product as this can cause buildup and make the extensions heavy.
Best Heat Protection Products for Clip-In Extensions
To keep your clip-ins top top condition, always use a heat primer before styling. MHE recommends our hair extension primer which has 10 incredible benefits including thermal/heat protection, split end repair & prevention and hair colour protection.
Choosing a product like this helps maintain the shine of the hair extensions while continuing to add volume to the extensions.
Heat styling clip-in extensions
Hair styling your clip in extensions can be safe when done correctly. By using the right temperature, a heat protectant, and proper techniques, you can curl or straighten your extensions without causing unnecessary damage.
For more expert tips, explore our other guides on washing, maintaining, and applying your clip-in extensions.
