What the effect if negative charged on a hairbrush and the positive charge of hair both increase?

If both the negative charge on a hairbrush and the positive charge of hair increase, the electrostatic attraction between them will intensify. This stronger attraction can lead to increased static cling, causing the hair to be pulled more strongly toward the hairbrush. As a result, the hair may stand on end or become more easily styled or manipulated by the brush. Additionally, the increased charges could lead to more noticeable static electricity effects, such as small sparks when in contact.