The actress revealed she has returned to brunette hair in a new post on May 4

Megan Fox is back to brunette!

The actress, 37, unveiled her newly brunette hair — along with a fresh bob — in a return to her signature hair color in photos posted on May 4.

“She’s a brunette again,” Fox wrote in the caption while sharing a carousel post of images of her new look.

The Expendables 4 star appeared in the first snap with short dark brown hair cropped above her shoulders in a loose wavy style as she stared straight at the camera in front of a white wall indoors.

Fox sported rosy pink blush and a matte red lip as she wore a loose-fitting denim jacket with a white Loewe tank top underneath, topped off with a red bandana tied around her neck, matching her make-up look.

Fox unveiled her return to brunette hair in a new photos posted on Instagram.

The actress showed off a bright blue manicure in the second photo as she tucked her new short hair behind her ear while wearing the same outfit.

Fox modeled her hairstyle again in the final snap as she stood outside what appeared to be her house. This time she wore a black furry sweater while sporting the same make-up look and manicure as before.

Fox’s return to brunette comes after experimenting with various hair colors in recent months — including bright red, pastel pink and blue.

Fox sported blue hair in April.

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The Transformers star first revealed her ice-blue bob haircut in a set of selfies she posted on Instagram on April 2.

“Entering my Jedi era,” Fox wrote in the caption at the time.

The actress was seen afterward attending weekend one of Coachella with her blue hair, which appeared to be dyed in a slightly deeper shade of blue, as she wore long extensions in mermaid waves for the festival.

Fox also sported blue hair while attending her beau Machine Gun Kelly’s 34th birthday party last month.

The actress shared photos of her striking look for the occasion on Instagram on April 24. She wore long straight blue hair with dark roots and sparkly faux teardrop eye makeup, a thick winged eyeliner, glittery champagne eyeshadow and a nude glossy lip.

In February, Fox unveiled her pastel pink hair while attending the Jam for Janie GRAMMY Awards Viewing party and before that towards the end of last year, she went for bold red hair while promoting her poetry book Pretty Boys Are Poisonous.