Burning my Un-hex candle

Hey everyone. I’m new here and I just received my un- hey candle. I’m really excited o get stared using it today. The booklet says to let it burn a minimum of 6 hours. When I’m ready to stop burning it so I can go to sleep do I need to snuff it out or is blowing out the candle okay? I’ve just heard from people that you’re never supposed to blow out your candle. Thanks.