The secret to frizz-free hair in humid autumn weather? Following these 3 golden rules, says an iconic hairstylist

It’s true that frizz doesn’t discriminate when it comes to hair type, although some of us are more susceptible than others. The trouble begins when moisture in the air penetrates the hair shaft, causing strands to swell and lose their smooth finish. And while humidity is often the driving force behind frizz, dryness and damage can make matters worse.

And while we typically associate high humidity with the summer months, autumn isn't without its challenges. Damp, drizzly days bring plenty of moisture, while blustery winds, woolly hats and the drying effects of central heating only add to the problem. The result? A perfect recipe for frizzy hair.

Thankfully, a few simple changes to your haircare routine can make all the difference. Ahead, celebrity hairstylist Sam McKnight MBE shares his three golden rules for reducing frizz. “These easy changes can improve manageability and ensure you aren't fighting your hair in the autumn/winter months,” he says.

Tip 1: Give your hair a moisture boost

While the aim is to keep excess moisture in the air from penetrating the hair shaft, maintaining moisture within the hair itself is just as important. According to McKnight, keeping hair well-conditioned is paramount if you want frizz-free strands.

“Conditioning the hair is crucial – it nourishes, adds shine, detangles and can be the key to softer, easier-to-manage hair,” he explains. His top tip? “Always squeeze out excess water before applying your best conditioner – if your hair’s dripping wet, the product won’t absorb properly.”

For an extra hit of hydration, McKnight also recommends incorporating a leave-in conditioner or repairing mist into your routine. His Stronger Love Bond Repair Spray, for instance, contains Keraguard, which he says helps defend against heat, humidity and environmental stressors that can contribute to frizz and damage.

Tip 2: Rethink your post-wash routine

How you handle your hair straight after washing can make all the difference to how smooth it looks once dry. And if you're guilty of vigorously rubbing your hair with a towel, McKnight suggests taking a gentler approach. “When styling, to prevent frizz and keep the cuticle smooth, gently squeeze/pat hair dry with a towel – no rubbing – and use a wide-tooth comb to detangle,” he advises.

Before reaching for the hairdryer, it's also worth considering your styling products. “When blow-drying always use heat protection,” says McKnight, who recommends choosing a product that addresses your particular hair concerns. “If you want a smooth blow-dry, opt for one with de-frizzing and de-fluffing capabilities.”

Tip 3: Perfect your blow-drying technique

“When blow-drying, try not to use the highest heat if you can,” he advises, explaining that the ideal temperature will depend on your hair type and desired style. “Thicker, coarser hair types might need a higher heat for control,” he says, whereas those with finer hair can generally stick to a medium heat setting, provided they're not trying to change their natural texture, such as going from curly to straight.

Temperature aside, position matters too. “Try not to hold the hairdryer right on the hair, to minimise excessive heat on each section. A few inches away makes a big difference,” says McKnight, who also recommends directing the airflow down the length of the hair to encourage a smoother finish.

And for those who frequently experience frizz, a concentrator nozzle can be a worthwhile addition. “For anyone prone to frizz, or for thicker hair, a nozzle on your hairdryer will help smooth and flatten,” he explains, although it's worth bearing in mind that this can work against you if you're hoping to add volume.