Blake Lively’s hair is like a character unto itself in the new romantic drama “It Ends With Us.”Her thick mane shapeshifts with her role, Lily Bloom, a flower shop owner who falls in and out of love with an abusive neurosurgeon. Lively’s hair, dyed a soft ginger, is artfully messy when she gets her hands dirty starting up the store. You could say Blake Lively’s hair is a tool she uses to sell her performance, but her performance is also a tool she uses to sell her hair. Those who are impressed with her locks in “It Ends With Us” can learn from her Instagram that she recently debuted a line of hair-care products called Blake Brown. In many ways “It Ends With Us” is a brand-building exercise for Lively.

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Persons: Blake, Lily Bloom, Blake Brown, Brown, Lively, Justin Baldoni, Colleen Hoover Locations: “