Yes, a freestyle or park helmet is a great choice if you're hitting rails, jumps, and pipes regularly. These helmets have a low-profile, skate-inspired design that sits closer to your head, giving you better freedom of movement and less bulk when you're spinning or flipping. They're also typically lighter than standard half-shell helmets, which makes them more comfortable for long park sessions.
The trade-off is that freestyle helmets often have less insulation and minimal brim coverage, so they won't keep you as warm on cold, windy resort days. Most come with removable ear pads, which is nice for spring riding but something to think about in midwinter conditions.
If you're splitting your time between the park and regular all-mountain skiing, a standard half-shell helmet with removable ear pads might give you more versatility. But if the park is your main scene, the freestyle style's lighter weight and lower profile are real benefits.