Mod The Sims has a tone of good skins/eyes.
http://www.modthesims.info/download.php?t=398421 for realistic skin.
http://www.modthesims.info/download.php?t=287488 for realistic eyes. I used to use these eyes until I switched to Nouk's (great creator, by the way) eyes.
http://www.modthesims.info/download.php?t=354309 there are also these eyes by dragonmandy.
I think Mandy (dragonmandy) is without a doubt one of the best creators for realism. She for the most part does eyes and makeup, and has some hair. She's one of my favourite creators, so I would recommend checking out her stuff at
http://www.modthesims.info/member.php?u=1051765Happy Simming! (I use dragonmandy and Nouk's stuff to make my Sims look more realistic)