If you don't have the time to scrutinize every single detail of every product you buy, here's a fail-safe technique: buy the product in authorized retailers or at the company store. Trusted stores such as Sephora and Ulta partner with the brands themselves, so you are sure that what you're getting is 100% legit. Always be careful when buying on Amazon or eBay, as these accept third-party sellers who may not be carrying genuine products.
