Hi! I’m an undergraduate student of Chemical Engineering from Puerto Rico. I’m doing an internship with a cosmetic company about nail polishes. Especially in how to avoid or minimize the time that nail polish begin to separate, they already export products to Miami, US but some nail polish especially the lights colors, blues and purples arrive separated, I don't have problem with the dark ones (red, black, etc). This happen also in our storage but take a little more time to separate.
I hope you can help me with some suggestions because here there is not another engineer or chemist, this is because the company don’t manufacture the product, they buy the product in United States and are in charge of packaging in the small bottles but before that they mix the pail of nail polish.
Some operational variables that I’m going to study: type of mixer (blades), time and rate of mixing, and packaging material
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