Did you make the Flame Sealing Wax[pl:"Waxes"]?

Let me see.

A very high-quality Flame Sealing Wax.

Well done. A less capable person wouldn't have done such a great job.

What the Flame Sealing Wax will be used for?

Haha, I can't tell you that just yet.

(You clicked on Instant Report[pl:"Reports"] in the Quest Journal and reported about the mission.)

(Click 'confirm' to receive a reward.)

The Pandora Recruiter Kastus tasked you with crafting Flame Sealing Wax using the Hot Sap and Hot Shells from the creatures in the Recruitment Office's area of control.

You asked how the Flame Sealing Wax is used, but didn't get a satisfactory answer.