Humidity is frizz’s best friend. When the air is moist, dry or damaged hair strands try to grab water from the environment, swelling unevenly and creating that halo of flyaways. Smothering hair in heavy products is one answer, but not always the best.
Start in the shower. Over-shampooing can strip hair of natural oils, leaving it thirsty and frizz-prone. Many people do better washing with shampoo fewer times per week and using conditioner more consistently on mid-lengths and ends.
Leave-in conditioners, light creams or serums can help seal the hair cuticle and reduce moisture exchange with the air. Focus on the lower lengths and ends instead of the roots to avoid a greasy look.
When drying, avoid harsh towel rubbing. Gently squeeze out water with a soft towel or cotton T-shirt to limit friction. Air drying or using a diffuser on low heat is often kinder than blasting hair with very hot air.
On especially humid days, simple styles like braids, buns or low ponytails keep hair contained and controlled. A little frizz is normal and human; the goal is to manage it, not chase perfectly flat strands in impossible weather.