Yes, he has acne. My cats Sky, Sunny, and Pearl also have feline acne and they eat out of stainless steel bowls. I've tried almost eveything and it usually clears up and the reoccurs later. Some people use the stridex acne pads but I haven't tried them yet. Just washing it with antibacterial soap and keeping it clean should help. My Sunny tends to break out due to stress. Starr's foster mom told me that using salt water may help too but I haven't tried this yet. If you find a good solution I'd also like to know. Good luck.

I forgot to add that I also tried Animax cream from my vet and it turned Sky's white chin fur yellow. It helped Sunny but then he broke out again.