There are certain things men notice right away when they see a woman. When a guy does a double take on you, there's a reason for it. As a guy I can tell you that as a fact.

Here are some things from Cosmopolitan.com that men instantly notice about women:

-The thickness of your hair.

-If you're smiling genuinely. We know if it's a fake smile or you really are having fun with a true smile.

-Your voice pitch. .

-How much you glow. If your skin is glowing and not patchy and blemishy, you look less stressed and guys will believe you to be relaxed and mentally healthy.

-What's fake about you. If a guy can tell your look is fake, he will think you're high maintenance.

Eyes. People notice the eyes more than anything else. Draw him into your eyes with makeup.