With an all white face you will notice some pinking on occasion, and the degree of the pinking may vary throughout the day. Similar to blushing or getting flushed as well. But just watch for any signs of it getting really really pink. Personally I think he looks perfect, and it will take a full 4 weeks minimum on a new food for their bodies to be 100% off of the old food. The only changes you will probably see is maybe 'brighter' eyes and silky coat, since he is still a pup. But the best change, LESS POOP!!!