This super-cool brand was the brainchild of four top hairstylists across the country, from New York City to Miami to Los Angeles: Aaron Grenia, Franck Izquierdo, Leo Izquierdo, and Chase Kusero. Their line features everything from a coconut oil styling cream to an anti-frizz smoothing serum to an invisible dry shampoo.

The IGK Beach Club Volume Texture Spray, $29, just so happens to be one of the brand's most popular products, and for good reason. This salt-free texturizing spray enhances waves for an effortless summer style, without drying out your hair.

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You know Kristin Ess as the hairstylist responsible for Lauren Conrad's gorgeous California girl mane. Now, she's brought her hair know-how to the masses with an affordable product line sold at Target.

Fans of her product line can't get enough of the Kristin Ess The One Signature Shampoo, $12.99. Suitable for all hair types, this gentle daily shampoo cleans hair without drying it out. It also features Ess' proprietary strengthening complex, which helps mend split ends and smooth rough, damaged hair.

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R+Co was founded by some of the most well-respected hairstylists in the biz, including Garren, Ashley Streicher, and Thom Priano. Their products are all sulfate-free, color-safe, and packed with effective ingredients that make caring for and styling your hair a breeze.

You'll marvel at how soft your hair feels when you use the brand's bestselling R+Co Television Perfect Hair Conditioner, $32. It adds body and shine, while also softening and strengthening strands. Plus, the scent, "dark waves," is divine.

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Those with curly hair are likely familiar with Ouidad, founded by the curl master of the same name. From softening mousse to climate control styling cream, Ouidad's line has everything you could ever need to keep your curls bouncy and defined.

One of her top sellers is the Ouidad Mongongo Oil Multi-Use Curl Treatment, $38. A blend of oils helps seal split ends and protect against heat damage without weighing hair down. No matter your curl type, you can expect smooth, shiny curls post-application.

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This New York City hair colorist is a celebrity favorite, having worked on everyone from Katy Perry to Jennifer Lopez. And she certainly knows a thing or two about color touch-ups.

Her hero product is the Rita Hazan Root Concealer Touch Up Spray, $25. This water- and transfer-proof spray seamlessly covers grays in between color appointments. You can also use it to cover thinning hair.

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