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Mark Hartman


Mark has won "Best Hairstylist" by the Nashville Scene for the past 5 years! He has been the lead stylist for several TV shows and well as the Oprah show and was the Titan's Cheerleaders stylist for their first decade in Nashville. He spends much of his free time riding and loving on his horses. Mark is also an accomplished chef. He learned to cook southern food as a boy in his father's restaurant and still can cook up a storm.

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Kat Lewis

Lead Master Stylist

Kat is one of Nashville's top stylists and when she's not making our clients look amazing, she enjoys working on her home/farm in Lebanon, TN and spending as much time as possible riding her horses, Imperio and Six.

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Rachel Wehby

Master Stylist

Rachel is an accomplished hairstylist. Her color work, especially balayage, is some of the best anywhere.

Rachel has become a blonde specialist creating stunning blondes from all tones of hair. 

She is a Nashville Native who loves spending her off time with her dog and friends. She also enjoys hiking and photography.

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Dana Thrasher

Master Stylist

Dana has been a Paul Mitchell educator for several decades. When she's not at Cognito, she enjoy teaching and training professionals. Dana enjoys working on her spring and summer garden, traveling and spending time with her cats.

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Emma Knake


Emma is a vintage fashion fanatic, excited to merge the worlds of classic and alternative beauty.

She especially loves fashion colors, shags, mullets, and custom redheads.

When not at Cognito, she can be found thrifting, scrolling tiktok, and enjoying her time with her cat, Bimoo. 

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Jasmine Shaw


Jasmine is a Nashville native, who is energetic and welcoming to all new and existing guests of Cognito.

Jasmine loves a variety of hair types and techniques and is a jack of all trades.

Jasmine loves taking her dog, Buck, to the lake, spending her weekend with her adult softball/soccer league, and enjoying the outdoors.

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