the zach ryan effect

when you meet someone and they immediately develop something in the back of their mind that thinks you are hot. they will also never forget about you this way

The Zach Effect, also simply called Zach Effect is referring to when a guy gets a haircut, and because of that, looks younger. This often only applies to guys who had noticeably longer hair before their haircut. This is sometimes because the guy had short hair when they were younger, and has just got it back, but the effect can happen otherwise as well.