Lightening freckles/hyperpigmentation before laser treatment?

Are lasers (i.e. IPL) more effective in treating freckles or hyperpigmentation if the spot is darker? If I used a freckle lightener on my skin so that my freckels were much lighter, would the IPL or laser not work as well? I don't know when I'll have the money for the IPL and I want to try to lighten the hyperpigmentation now so that is why I am asking.

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