Sometimes it's something "physical (hair, eyes)," sometimes it's "visual" (How she carries herself, her sense of style, etc), sometimes it's a little detail or mannerism (though usually this is coupled with something else), and sometimes it's hearing that we have a lot of things that we have in common. It's usually a combination from "all of the above."
The woman that I'm interested in now - she's very attractive - but not what I would have thought I'd ever go for. But it's not "just" that. We have similar interests; We've worked at similar jobs; we've had similar obscure pets; we have a lot of the same hobbies, similar tastes in movies and TV shows; even our "bucket lists" have similar things on them. The hobbies that we don't quite share 100%, I think that we appreciate them, but for different aspects. It's very cool.
Well, everyone is going to have a different answer, but let's see... for me personally, I like thin girls with long hair who dress very casually. I think it's cute as hell when a girl is just wearing pajama pants, or something comfortable. I don't mind if they're wearing makeup or dressed up at all, I just like natural beauty.
IF YOU GOT LOOKS AND PERSONALITY THAT A MANS DREAM IF YOU LIKE SPORTS A PLUS AND IF YOU AINT SHY ABOUT URE SEXUALITY ONTHER PLUS FREEK IN THE SHEETS
TIERD OF THIS INSCURE CONSIDED BARBIE TYPE GIRLS THEY LOOK GOOD BUT THEY SUCK WHEN IT COMES TO RELTIONSHIPS FOREALS THEY CARE TO MUCH ON HOW GOOD THEY LOOK OR IF THE OTHER GIRL IS TALKING ABOUT THEM F*** THAT! TO MUCH DRAMA...
Hair and skin. smile and all the other things matter too but if you haven't seen the girl before the first glance would attract those two things the the facial summetry, eyebrows/eyes and smile would be the second thing or the body depending on the guy... it's like a car.. the car with bad paint job wouldn't attract a lot of girls lol.