No instruction manual included. Used a few times. Are you having trouble styling your hair? How about this? ♪ [Product Overview] AGLAIA's Heat Brush is a convenient hairbrush that allows you to quickly style your hair. With its negative ion function, it suppresses static electricity in your hair and achieves a glossy finish. [Functionality] It is equipped with a temperature adjustment function, allowing you to set the optimal temperature according to your hair type and style. The power switch is also simple and easy to use, making it easy to operate. - Brand: AGLAIA - Product Name: Heat Brush - Function: Negative ion function - Temperature Setting: Temperature adjustment function - Power: Power switch