Based on yesterday, yes to a certain extent it seems to make scars appear temporarilly more visible, especially if you burn. I had a small burnt on my left wrist, and my 1 year plus scratch scars reappeared slightly, but have faded now after I applied cooling gel.
The scars are contrasted by the tanned/burnt skin, and so will appear more visible after exposure for about 6 hours or so, before fading after a while. Just put some lotion on, and maybe abit of cooling gel if you were burnt, and wait for them to fade