I mix progesterone with vitamin E powder and some drops of coconut oil.
I don't make a solution to store. I simply put the day's ingredients on a spoon, mix with a finger for 2 seconds, and apply directly to my gums.
I store coconut oil in this dropper container
https://www.amazon.co.uk/gp/product/B0BY8Y6S8Z/
I use this Vitamin E powder (the capsules are easy to open)
https://www.timehealth.co.uk/product/vitamin-e-complex/