Kind of like a makeup primer—but for hair—Bumble and Bumble Hairdressers Invisible Oil Primer ($24; sephora.com) coats your strands, smooths frizzies and protects your style from blow-dryer heat and the sun. If only it also applied sunscreen to the middle of your back.
Because sun causes brassiness and fading—plus, warm weather makes hair (and therefore gray roots) grow at an accelerated rate—even salon devotees may find themselves doing at-home hue maintenance with L’Oréal Paris Superior Preference Mousse Absolue ($15; ulta.com). The breakthrough product boasts a delivery system that mixes dye and developer just before dispensing. That cuts down on mess and keeps unmixed ingredients fresh inside the bottle. Also, you can choose to use a little or a lot each time you touch up roots. Available in 16 shades.
If shine serum weighs down your hair, Oribe Soft Dry Conditioning Spray ($35; oribe.com) may be your best drabness dispeller. It boosts shine weightlessly and instantly, making dry hair softer, swingier and subtly fragrant.
Outdoor summer fun can leave hair coated in sweat, chlorine—even sunscreen. Quick fix: One wash with Pantene Weekly Deep Cleanse Purifying Shampoo ($5; target.com) gets rid of that buildup and leaves strands shiny and squeaky-clean.
Boost your hue weekly with Rita Hazan Ultimate Shine Color Gloss ($26; sephora.com), which adds pigment and luster to replace what’s lost to frequent sunning, swimming and shampooing. Available in four colors, plus a noncolor formula that enhances shine.
Sweat and other summertime grime can accumulate on the scalp, clogging hair follicles and inhibiting healthy hair growth.The solution? Restorsea Revitalizing Scalp Treatment ($150; restorsea.com). Rumored to be a Gwyneth Paltrow obsession, it fosters growth with salmon enzymes that slough off buildup and dead cells.
Leonor Greyl L’Huile de Leonor Greyl ($57; leonorgreyl-usa.com) can be used two ways: as a pre-shampoo treatment that envelops hair in deeply hydrating nut oils (just massage it on dry locks, wait 10 minutes, then shampoo as usual) and as a beach or poolside treatment that blocks UV rays by forming a protective barrier.
Humidity is hair’s summer enemy numero uno, and there is still no substitute for the original fuzz flattener: John Frieda Frizz Ease Expert Finish Polishing Serum ($10; drugstore.com), whichuses vitamin E and hydrolyzed silk to smooth swelling cuticles and prevent the dreaded halo-hair effect.
Deborah Sarnoff, MD, president of the Skin Cancer Foundation, reminds us that the scalp is skin, too, and should be thoroughly checked, along with the rest of your body, during your annual skin-cancer exam. Sarnoff speaks from experience: She had a suspicious mole removed from her own scalp after her stylist found it while cutting her hair. She also recommends donning a hat whenever possible; it’s the only surefire way to shield your scalp from UV rays. Pictured: fedora ($365; eugeniakim.com).