Do (how?) facial creams like anti wrinkle or collagen actually work?

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I have read about face creams etc but it’s very difficult to identify the truth from the marketing. From what I can tell, the whole industry is nonsense and preys mostly on insecure women. It seems like there is no way to prove it since if the results are less than expected, the reply would be “imagine how much worse it could have been.” Maybe too many questions but is there any correlation between cost and effectiveness?

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