I use coconut oil because it is easier to find the right kind. His fur is very glossy and smooth right now. This is the kind of fish oil I have seen recommended on the site https://www.amazon.com/Grizzly-All-N.../dp/B0002ABR6E.
I do still have chin irritation issues and have been trying different things. I don't think it is the food as his ears are good, but the cleaning regimen and I haven't found the right formula yet. For those of you who use fish oil do you find it helps with the chin irritation and acne?