Leather seat "dented."
 

Just bought a 2012 XLE. The person who leased it apparently had a child seat on both back seats. The leather has the "dents" from the child seat. Naturally, I am looking for a way to reduce or remove these. I have read about the hair dryer method, but I'm afraid to try this one. Any advise?
Thanks

Dents in the back or lower seat cushion?

Every one does state a hair dryer or iron with cloth to prevent burning.

Might try coming in from behind the leather (through the cushion) and force the area out.
The cushion material may be dented and as such working with the leather only may not accomplish much.

Over all leather does not like heat and will crack and start to scale like human skin.

Suggest reading up on leather cleaning and conditioning. Some pro's recommend warm water and a mild soap such as Dawn. Wipe the seat area and brush if required then wipe dry with microfiber towel. Or just use warm water and wipe dry.

Once clean can use a conditioner such as Lexol although some just run a damp cloth over the leather from time to time to add moisture.

Take more effort on the upper portion of seat and head rest as this area tends to become hot when the car is sitting in the sun.