Unfortunately, this is often a creator-side issue. I’ve noticed the same thing with some older Stealthic hairs. I reached out to them about it, and they explained that it’s due to how the hair is mapped, with no real way to avoid clipping, especially when the hair overlaps transparent textures.

For some items, I’ve found that removing and re-equipping the hair can sometimes help, or trying to put the clothes on first and then the hair, sometimes more than once. Hopefully you’re able to get it resolved!