Can Dyed Hair Still Be Healthy? A Top Colourist Shares the Truth
As we head into hair transformation season, many people are considering switching up their hair colour to reflect the warmer weather. Whether you desire a complete makeover or a subtle refresh, appointments with colourists are booking up rapidly. However, concerns about hair health often linger in the background, with worries about split ends, dryness, and damage from colouring processes.
Here, Zoë Irwin, creative director at John Frieda salons and a renowned trend forecaster, provides definitive answers on whether colouring and bleaching must inevitably lead to damage. She also reveals the insider tips she shares with all her clients to ensure their hair looks its absolute best when they leave the salon.
Is Healthy Coloured Hair Actually Possible?
According to Zoë, the answer is a resounding yes, but it fundamentally depends on the starting condition of your hair. During initial consultations, she prioritises assessing hair strength, meticulously checking for any signs of weakness or breakage. If the hair is not in optimal condition, she often advises postponing the colour service and recommending a dedicated repair period first.
"You get the colour for the quality of hair you’re colouring," she explains. Building up strength, even over a few weeks, can make a significant difference. This is particularly crucial for those opting for high-impact shades, such as vibrant coppers or deep, glossy brunettes, which demand resilient strands.
Home Haircare is Just as Crucial as the Salon Appointment
When it comes to colouring, especially bleaching, Zoë is unequivocal: healthy hair maintenance begins the moment you exit the salon. "You need to immediately feed it," she emphasises, stressing that the aftercare regimen followed in the initial weeks truly determines long-term hair appearance and texture.
Her fundamental advice is straightforward yet highly effective:
- Replace your regular conditioner with a deep conditioning mask after your colour appointment.
- Maintain this routine for at least two weeks.
- Apply the mask to wet hair, distribute it evenly with a gentle brush, and leave it on for a minimum of three minutes—longer if possible.
Hydration remains paramount, whether through richer masks or advanced treatments like the Olaplex No.3, which she notes has been enhanced for better hydration. Lightweight oils and serums, such as L’Oréal Professionnel’s Colour Spectrum Glass Shine Serum, can also help preserve shine and tone, keeping your colour looking vibrant and fresh for an extended period.
Protect Your Hair from UV Rays and Environmental Factors
It is essential to recognise that environmental elements can significantly alter hair tone. Sun exposure, in particular, can rapidly shift colours—blondes may develop yellow tones, while brunettes can acquire unwanted reddish hues. "The tone is what you need to preserve," Zoë clarifies, highlighting the importance of UV protection.
A simple protective spray can make a noticeable difference, especially if you are planning a holiday or spending considerable time outdoors. Even wind can gradually lift colour over time, so incorporating protection into your routine is wise. Zoë frequently recommends products like L'Oréal Professionnel Vitamino Color 10-in-1 Multi-Purpose Treatment Spray to her clients for comprehensive care.
Avoid Overloading on Protein Treatments and Purple Shampoos
Finally, achieving balance is key. While protein treatments have gained immense popularity, Zoë cautions against excessive use. Hair requires both moisture and protein; an imbalance can disrupt hair health. "It’s a misuse of the product, not the product itself," she elaborates.
The same principle applies to purple shampoos. Used sparingly, they can effectively brighten tone, but overuse may result in hair appearing flat or excessively ashy. Her professional advice includes:
- Rotate your haircare products regularly.
- Opt for gentle formulations.
- Recognise when to reduce usage.
Additionally, avoid using purple shampoo the week before your salon appointment, as it can make it more challenging for your colourist to adjust your tone accurately. By following these expert guidelines, you can enjoy beautifully coloured hair while maintaining its health and vitality.



