Long haired cat - hairball remedies?

[Blurb]

Adding in daily any oil-based product usually helps. I've used mayo or even (fresh, local) raw eggs on occasion and it's helped. Also can help the cat's dry skin or hair which can also be related, especially with older animals. I always let my cats lick the oils left in the pan when I broil or bake salmon too, which is at least once per week, so that likely helps as a preventative as I see less regular fur ball problems since doing that.