How Can One Get Rid of Ridging (A Raised Elevated Hairline), Can the Hair Grafts Be Removed to Reduce the Ridging?

This is the curse of the old hair transplant. Sometimes steroid injections work. If not, removing the ridge is possible in the hands of a good surgeon. 

The usual condition described as "ridging" is an arc of elevated thickened scalp skin after repeated old fashioned punch grafts were done to create maximum density for a front hairline. The only success I have had in treating this condition is to cut out the full thickness of skin and settle for a fine scar that usually fades away. One has to have a flexible scalp and forehead and limited ridging (at the most, 4cm from front to back) to do this .