The Damage Heat Tools Cause
Flat irons, curling wands, and blow-dryers all use heat to style hair — but that same heat can cause serious damage if your hair isn’t protected. Temperatures above 150°C begin breaking down the protein structure of the hair, causing dryness, brittleness, frizz, and eventually breakage. Many styling tools reach 200–230°C.
What Heat Protection Actually Does
Heat protection products create a barrier between the heat source and your hair shaft. They work by distributing heat more evenly, slowing the transfer of heat into the hair, and coating the cuticle to reduce moisture loss during styling.
Types of Heat Protection Products
Sprays: Lightweight and easy to apply, sprays are ideal for fine or thin hair. Apply to damp hair before blow-drying or dry hair before using hot tools.
Creams and serums: More nourishing than sprays, these work particularly well for thick, coarse, or frizzy hair. They provide heat protection while also smoothing and conditioning.
Oils: Certain oils (like argan oil) provide some heat protection while adding shine. Best used as a finishing product rather than a primary heat protectant.
How to Apply Heat Protection Correctly
- Apply to damp or dry hair — read the product instructions
- Distribute evenly from mid-lengths to ends
- Don’t skip the ends — they’re the oldest and most vulnerable part
- Allow product to absorb slightly before applying heat
Also: Use the Right Temperature
Fine or damaged hair: 120–150°C. Normal hair: 150–180°C. Thick or coarse hair: up to 200°C. Always use the lowest effective temperature for your hair type.
Get Professional Product Advice
Our team at Iron and Ivy Hair can recommend the right heat protection product for your hair. Book an appointment in Queenstown today.
Frequently Asked Questions
At what temperature does heat damage actually start?
Hair protein begins to degrade around 150°C, and significant damage can occur above 180°C. Most flat irons and curling wands reach 200-230°C, which is why heat protection isn’t optional — it’s essential for anyone who styles regularly.
Do heat protectants really work, or are they just marketing?
They do work. Quality heat protectants form a barrier that slows heat transfer to the hair shaft and reduces moisture loss. They won’t make a 230°C iron safe, but they significantly reduce cumulative damage with regular use.
Should I apply heat protectant to wet or dry hair?
Most sprays are designed for damp hair before blow-drying. Creams and serums for straightening or curling should be applied to nearly dry hair — applying to soaking wet hair just before using a flat iron can cause steaming and damage.
Is a lower heat setting always safer?
For fine or damaged hair, yes — use the lowest setting that achieves your desired style. Thick or coarse hair may need higher heat to style effectively, but always prioritise a quality protectant over maximum temperature.
Can I use Moroccanoil Treatment as a heat protectant?
Moroccanoil Treatment provides some heat protection, but it’s best used as a finishing product rather than a primary protectant. For high-heat styling, pair it with a dedicated heat protectant like Moroccanoil Perfect Defense for reliable protection up to 230°C.
How can I tell if my hair is already heat-damaged?
Heat-damaged hair feels rough, looks dull, breaks easily, and loses its natural wave or curl pattern. If you notice persistent frizz that doesn’t respond to products, or splits that run high up the shaft rather than just at the ends, heat damage is likely the cause.
About Iron + Ivy Hair Studio
Iron + Ivy is Queenstown's award-winning hair studio, located inside Queenstown Central Shopping Centre on Grant Road. Our team of specialist stylists bring real expertise and a genuine love of hair to every appointment — whether that's a colour transformation, a lived-in balayage, a precision cut, or bridal hair for a wedding in the mountains. We work with a focused clientele because exceptional hair takes time, skill, and care. You'll always leave knowing exactly what went into your hair and how to look after it at home.
Take the first step toward the hair you want. Book with the team at Iron + Ivy Studio
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