What Are Sulphates?
Sulphates (like sodium lauryl sulphate and sodium laureth sulphate) are the cleansing agents in most conventional shampoos — they’re what creates that satisfying lather. They’re effective at removing oil, product build-up, and dirt, but they’re also highly effective at stripping colour molecules from the hair shaft.
How Sulphates Affect Colour
Each wash with a sulphate-heavy shampoo opens the hair cuticle and flushes out colour molecules, accelerating fade significantly. This is particularly damaging for lighter colours — blonde, balayage, and any toned shades — where the colour molecules are already less deeply embedded in the hair.
What Is Sulphate-Free Shampoo?
Sulphate-free shampoos use gentler cleansing agents (like cocamidopropyl betaine or sodium cocoyl isethionate) that clean effectively without aggressively stripping the hair. They’re less lathery than traditional shampoos but just as effective at removing everyday dirt and oil.
The Colour-Extending Benefits
Switching to a sulphate-free shampoo after a colour service can extend the life of your colour by weeks — sometimes months. Your toner stays vibrant, your balayage stays bright, and you spend less on colour refreshes over time.
Other Benefits of Going Sulphate-Free
- Reduces scalp irritation and dryness
- Preserves natural oils for healthier hair
- Extends keratin treatment results
- Better for sensitive skin types
Our Shampoo Recommendations
Visit Iron and Ivy Hair and ask our team for a sulphate-free shampoo recommendation tailored to your hair type. Book an appointment today.
Frequently Asked Questions
What are the best hair products for fine or thinning hair?
For fine or thinning hair the goal is volume without weight. Look for lightweight volumising shampoos, avoid heavy conditioners applied at the roots, and use a fine-mist spray before blow-drying rather than creams or oils. At Iron + Ivy we can recommend specific products suited to your hair after seeing it in person.
Are salon products actually better than supermarket products?
In most cases yes, not because of branding but because professional products use higher concentrations of active ingredients and are formulated for specific hair needs rather than broad shelf appeal. That said, there are some excellent mid-range products available. Your stylist can point you toward the right options based on what your hair actually needs.
What hair products should I use after a colour service?
A colour-safe, sulphate-free shampoo and a moisturising conditioner are the basics. A UV-protecting spray is genuinely worth it in Queenstown’s high-UV environment and slows colour fade significantly. A weekly mask keeps colour-treated hair in good condition and feeling healthy between appointments.
How do I protect my hair from heat damage?
A quality heat protectant is non-negotiable before any hot tool use. Use the lowest effective temperature for your hair type, most hair responds well to 160 to 180 degrees rather than the maximum setting. Limit heat styling frequency where you can, and keep your hair well conditioned so it is more resilient overall.
How do I know which shampoo is right for my hair?
Start with what your hair actually needs rather than what the label says. Dry or colour-treated hair benefits from moisturising, sulphate-free formulas. Oily hair does better with a gentle clarifying shampoo. Fine hair needs lightweight formulas that do not flatten it. When in doubt, ask your stylist at your next appointment. It is a quick question with a meaningful impact.
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.
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