The History Brush introduces the ability to paint back details that existed in an image when or after it was first opened. It gives the user the amazing ability to ‘go back in time’ and correct mistakes without reverting the entire image back to a former state. It’s kinda like the history panel but in the form of a brush: maybe itself a reason why they call it the History Brush! In this example we’ll paint back the sky around a billboard while leaving the changes we made inside the billboard untouched. It’s a great feature of Photoshop that deserves to have it’s 15 minutes of fame!