Frizzy waves usually want two things at once, moisture and no weight. Go too rich and the wave drops. Go too light and the frizz wins. The shampoos and conditioners that get this right pair a gentle cleanser with a conditioner that smooths without coating. Olaplex's N°4CURL shampoo and Living Proof's No Frizz conditioner are a good place to start, and Crown Affair's leave-in goes on soaking wet hair straight after. From there, one styling product is usually enough.

What decides this is how thick your hair is, how much weight it can take and how much build-up you get. Fine waves do better with lighter formulas like Oribe's volume conditioner and the nous wave trio. Thicker, drier waves can handle Peter Thomas Roth's Mega-Rich pair, Tracy Anderson's shampoo and conditioner or e.l.f.'s Never Thirsty. If you use a lot of styling product, clarify every few weeks so your conditioner can actually do its job. Manymoons makes solid bars for normal, dry and oily hair, which makes matching your type simple.

Less product, placed lower down, almost always looks better. Condition from the mid-lengths to the ends and leave the roots alone. Once a week, swap your conditioner for a mask like OUAI's Bond Repair Balm or Gisou's Honey Gloss. Then style while hair is still wet. Bounce Curl's cream or Olaplex's No. 6 for definition, a drop of Moroccanoil's serum on the ends, and Oribe's Gold Lust spray or OUAI's heat-protecting oil if you are using a dryer. The scalp massager and scalp serums are extras for scalp care, and COOLA's scalp mist is worth packing for sunny days.

Most frizzy waves improve with a gentler shampoo, a smoothing conditioner and one leave-in, and everything else is extra. If you take one thing away, put your leave-in on soaking wet hair and then keep your hands off it until it dries, because touching waves while they set is one of the easiest ways to create frizz.