If someone asks you about a product that you bought relatively expensive but that saw no benefit on the skin, you probably have at least one name. Anyone who cares for the skin finds it hard not to be tempted by expensive products because people are inclined to believe that the more expensive a product, the better. In fact, it is not necessarily so.
Small brands sometimes do not have the funds to test their products in a laboratory, and ethical companies refuse to test them on animals, limiting data collection. On the other hand, large companies prefer to use a more natural chemical base instead of a cheaper ingredient, so if you think you are getting multiple ingredients, it is actually likely that 90% of the product has the same ingredients as a drugstore product.
The best way to make sure companies are not fooling you about the benefits of products is to read the list of ingredients and focus on the ingredients that have been scientifically proven to work. Retinol, hyaluronic acid, vitamin C or vitamin E are always ingredients supported by countless studies.