Could you please let me know if you have selected the Adjustment Brush and then you are checking under effects ?
Also please check for the process version , it should be upto date.
Also is your Lightroom upto date ?
Create your own Brush Presets for any purpose.
With the Brush tool active, set the sliders and click the drop-down menu "Save Current Settings as new preset", save with a meaningful name.
Eg. (these are starting points- change to your desires)
Eye Drops (to whiten) : Exposure +1.5, Highlights +40 Saturation -60.
Teeth Whiten : Exposure +0.5, Saturation -25, Contrast -15.
Skin Powder : Contrast -50, Clarity -100, Sharpness -100.
Hair Sparkle : Contrast +30, Clarity +40, Saturation +20