At normal doses (<200ug for lsd) the experience is much milder than what reading stuff on the internet makes you think. It will not make you see dragons, nor permanently alter your brain in any significant way, if at all. It does wear off after 12 hours although sometimes there’s an “afterglow” (a very very mild sensation of being high) that can persist for few days.

What is does is exactly what the article explains - it unlocks the inner child in you. You will be curious about everything, everyday objects will suddenly become interesting as if you saw them for the first time. Your senses might become connected, some people “see” music with their eyes closed for example. It will make your mind go places that it normally rarely or never visits and you’ll be able to think about stuff from angles you didn’t pay attention to before.

It is a very powerful and useful tool if used correctly.