If you've taken the time and considerable effort to blow-dry your hair into smooth submission, the heavens suddenly opening is even more frustrating than usual. And, even if there's not a complete downpour (for once) sticky, humid days can make your hair frizz up in a fraction of the time it took to get it so perfect.
Have no fear - we've grilled super stylist, Amy Heath of FOUR London on everything there is to know about frizz. Amy told us "Frizz happens in the rain - or in hot, sticky climates - because moisture is getting into the hair structure and making the cuticle swell. When the cuticle swells up, the hair strands look bigger and unruly."
Which means that the fluffy mane on your head is actually a pretty accurate representation of what's going on in the hair shaft.
"Curly, coarse or even wavy hair is more prone to frizz, as when the water enters the cuticles it means the hair wants to go back to it's natural structure - which in those cases, isn't sleek or smooth.", Amy explained.
If you want to stop frizz in its tracks, Amy advised look for products with natural oil and keratin-based ingredients which help smooth the hair and lock in shine - noting Kerastase Ciment Thermique (£20.50) for use before styling, Wella SP Oil (£28.30) for dry hair and Moroccanoil (£31.85) for extra course hair as her go-tos.
"Use a cream or styling lotion on wet hair before you blow dry your hair. It keeps the hair hydrated, meaning it doesn't get so much of a shock when external moisture comes floating around! It will act like a barrier in the hair structure.", was Amy's styling advice.
If you want a humidity-proof style, check out Undone Half Braid tutorial with L'Oreal Paris' Syd Hayes. It's quick, easy and oh-so-chic...
Holding image credits: Hair: Adam Reed for L’Oréal Professionnel using Techni-Art. Make-up: Mel Arter at CLM Hair & Make-up using Givenchy. Nails: Jessica Hoffman at Caren using Chanel.