Dropdown menu tools as brushes?

Yes, a layer mask is what you want to use, but to brush in the adjustment, the mask must start out black, and then you paint white into it. Some steps to set that up are below, along with a demo:

1. Add the Vibrance adjustment layer. By default, it comes with a mask filled with white, which means the adjustment applies to the entire canvas. The demo adds it with the Adjustments panel, which is a shortcut for choosing Layer > New Adjustment Layer > Vibrance.

2. Set the amount of Vibrance you want, and press Enter. For now, don’t be concerned about the fact that it affects the entire canvas. we’ll take care of that.

3. Reset the foreground and background colors to their default white and black colors, respectively. The keyboard shortcut for this is to press the D key.

4. With the Vibrance adjustment layer mask still active, press Ctrl-Backspace (Windows) or Command-Delete (macOS). This fills the mask with the default background color, black. That’s the shortcut for choosing Edit > Fill, and setting Contents to Background. With the mask filled with black, the adjustment is completely hidden.

5. Set the Brush tool to the kind of brush you want, and paint in the Vibrance layer mask. The brush paints the foreground color (white) into the mask, revealing the Vibrance adjustment where you paint. If you set the foreground color to a gray shade, the mask will become partially transparent where you paint.

6. If you want to see what the layer looks like without the mask, Shift-click the layer mask. That’s in addition to being able to hide the entire adjustment by hiding its layer.

Using a layer mask (or vector mask) is the standard way to restrict adjustments to specific areas of an image. For example, you can use this to brush in sharpening, using a mask on a sharpened copy of a layer. Once you learn how to control adjustment areas with layer masks, you’ll use this all the time.

@McBarker not sure I understand your question, but you can paint on an adjustment layer mask, just add the adjustment layer you want and select the brush tool, you can then paint on layer mask to remove the unwanted effect from certain areas

https://helpx.adobe.com/ie/photoshop/how-to/adjustment-layer.html