An example adjustable brush may include a handle and a brush head coupled to the handle. The brush head may include a platform, a first arm extending from the platform, and a second arm extending from the platform. A non-rotatable shaft may extend between the first and second arms and a rotatable shaft may be positioned between the non-rotatable shaft and the platform. The rotatable shaft may extend between the first and second arms. A plurality of adjustable teeth may be slideably coupled to the non-rotatable shaft and a plurality of spacers may be positioned on the rotatable shaft. At least a portion of one or more of the plurality of spacers may engage at least a portion of a respective one or more of the adjustable teeth. A rotation of the rotatable shaft rotates the spacers and causes a lateral movement of the adjustable teeth along the non-rotatable shaft.
