Wearing only suncream to heal acne scars, is this right?

I have been told to only use sunscreen and not to use like nivea face cream or aleo Vera as it absorbs the scar further is this right?

And is the suncream meant to like dry out your skin in time as I get flakeyNess as I believe dead skin is removing itself.
Wearing only suncream to heal acne scars, is this right?
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