Would ending a shower with cold water effectively close the pores?

When I shower i use hot water, and i ume most people do, and in using hot water, the pores get opened. When you get out of the shower your pores are still open, good chance that your pores are more susceptible to getting clogged, so would ending a shower with cold water effectively close the pores and limit skin damage? Or is this just b.s.?