An Omega-3 deficiency can cause dandruff and itchy skin in cats. Omega-3 fatty acids contribute to the overall health of cats’ skin, and as they cannot be synthesized by your cat’s body, their diet is the only way they can get it. To ensure that your feline friend is living their best and most comfortable 9 lives, here are 7 effective Omega-3 fish oils that help ease dandruff and itchy skin: