Elder Un needs some pampering. Why don't you give him a massage?

He needs more bigger hands.

There are enormous monster feet slippers at Goal's habitat. Use them.

Now he wants to be waxed.

We don't have bees here this time. Maybe you could make wax out of something else.

In the council floor (pink key) you can find wax plastic balls in the ball pit.

But they are plastic, you know.

Melt them to wax in the red heat lamp. Use the wax to Elder Un and grab the back hair with you.