Very unlikely it will remove a dent completely from a crease but may make it smaller.

I bought one of these and a $200 sliding dent puller from the states which I prefer but one thing I found was you can re-use the glue, I found by keeping it hot (by sitting mine on top of a lamp) you can just keep dipping the tabs in it, I used about one stick to do my whole car, had I used the gun I would have used at least 20.
I got about 80% of most dents out but because the car has been painted before the paint will come off in places (needs re-painting so I don't care) but certainly makes the divets much easier to handle/bog., will try to get some pics up tomorrow.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.