The slider for the brushes hardness is never available. How can adjust/or show availability?
try to reset the tool.
Please refer the below screen shot
What version of photoshop elements are you using?
Are you using the Brush Tool or another tool in the tool box?
P.s. 11. I tried reseting the brush but if I change brushes it becomes inoperative again.
Sent from PEPE's iPad.
In photoshop elements only the brushes based on the round brushes (computed brushes as there sometimes called)
have adjustable hardness (ones in the red stroked area are examples of the round brushes)
Other brushes such as the ones below don't have adjustable hardness.
Thank you so much