THE BEST HAIR OIL
Stylists have been reaching for Moroccanoil Treatment ($44) since 2008 for its instantly absorbable boost of 100- percent pure argan oil that moisturizes dry, frizzy hair— and of course that signature scent.
THE BEST SCALP SOOTHER
Apply Rahua Founder’s Blend Scalp & Hair Treatment ($40) before bed, wrap hair in a towel and let the potent, plant-based oils— rahua, palo santo and hemp— quell dryness and irritation by morning.
THE BEST SPLIT END MENDER
The brainchild of hair duo Nikki Lee and Riawna Capri, InCommon Beauty Mended Sea Strengthening Enhancer ($30) fortifies each hair fiber with silk proteins and avocado oil to make split ends vanish.
THE BEST TREATMENT FOR THINNING HAIR
A non-oily serum formulated with 99-percent plant-based ingredients, including scalp-stimulating celery seed extract, PHYTO Novathrix Scalp Treatment ($95) dramatically slows down thinning.
THE BEST SUPPLEMENT FOR THINNING HAIR
Whether thinning hair is from stress, overstyling or something else, Nutrafol for Women ($88 for a one-month supply) establishes the right nutrient balance to improve strength, texture, density and shine.
THE BEST BROW CONDITIONER
RevitaBrow Advanced Eyebrow Conditioner & Serum ($110) has been transforming barely there and aging brows for years—just brush a few strokes on each brow before bed and let the peptide-rich serum do its thing.
THE BEST LASH ENHANCER
Throw any doubts you had about lash serums out the door. A quick swipe of tried-and-true Grande Cosmetics GrandeLASH-MD Lash Enhancing Serum ($65) each night promotes a longer, thicker look in one month.
THE BEST COLOR ENHANCER FOR BRUNETTES
Use Leonor Greyl Soin Repigmentant Dark Brown ($65) every three to four washes on medium-to-dark brown hair to neutralize brassy tones and restore major shine with 96-percent natural ingredients.
THE BEST ROOT COVER-UP
The cap of Revlon Permanent Root Erase ($12) doubles as a mixing bowl, making it easier than ever—it takes five minutes—to camouflage pesky grays and refresh color with one of 13 salon-quality shades.
THE BEST COLOR ENHANCER FOR BLONDS
The violet micropigments in Philip Kingsley Pure Blonde Booster Colour Correcting Weekly Mask ($23) eliminate dull yellow tones while keratin and vitamin B5 deeply condition areas with breakage.
THE BEST AT-HOME COLOR
New from the hair gurus at L’Oréal comes Color&Co ($20), a modern approach to subscription-based hair color that lets users virtually try on different hues, customize their routines and get help from pros along the way.