it might but here in humid qld seeing my dog go from properly panting in the heat to being comfortable was worth it. Despite what some ppl will tell you I don't agree with the whole "your dog cools via his underneath coat thing", in practice they don't. I bet winter they keep warmer but in summer here they get super hot. mum does the same thing with her little king charles and he's so happy with his clips. It really is night and day.