When making sticks, we usually face deformations in the middle of the product like small depressions and holes.
I'm using this eco packaging on my deodorant stick and the main problem is that a hole is formed in the same way as shown below. It continues until the bottom of the package.
I know I can heat up a scoop or something and run it over the top of the stick, but the hole would still be below and with use it would be revealed. I want to avoid this situation.
The first thing that came to my mind was putting a sample under refrigeration. Do you think it would work or is the problem something else?
Thank you in advance!