There are differences between salon and drugstore brands (however there are great formulas in both categories). But here's the catch: when you buy a product from a hairstylist, you're getting a regimen that has been specifically prescribed to you by a professional who knows your hair type and what balance of ingredients are necessary to achieve your desired the end result. When you go into a drugstore or supermarket, it's a guessing game, and you're the only player. Sometimes you'll get lucky and find exactly what your hair needs; sometimes you won't.
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