Some skiers think helmets are for the most aggressive. Others think such protection is for wimps. Helmets in fact, are for every skier. People hit their heads on every type of trail (and ability is useless if an out-of-control person slams into you). The saying goes, “No brain bucket. No brain!” Don't prove the point. Wear a helmet.
You might think of helmets as restrictive killjoys. Try a few on at your local ski shop and see if you are right. The helmet that fits you best is important to find, but any helmet provides a restriction you want. (The one that restricts your brain from meeting bark.)