[Sun Care] How can you verify that you're getting legitimate product from overseas vendors?

Beauty Tips For Body Care
I get la roche posay sunscreen from lifeandlooks.com as well as shishiedo senka sunscreen from japan import shop on amazon.com. My question is how do you verify that the companies are legit, they send the product overseas in an air conditioned ship so the product stays well. Maybe I'm just being paranoid but I want to make sure the products I'm using are in good shape once they arrive.
Girls Blog 2015
Submitted by scrumptioussoda