Well, I know changing gender and races will cause perks not working. But, well... this topic is just a double check(or multiple).
I've already checked the answers on other sites. But I still worry about if there are side effects or not about only changing age and hair color.
So... can anyone give me a answer? Thanks in advance.

I'm pretty sure just changing your look won't break your stats.

The only thing that will mess up your perks/stats is changing your race and I'm pretty sure changing your character's sex will bork them as well, even if you don't change races. All of which can be fixed with console commands, I even think there was a 'safe' mod that allowed you to do change races with no ill effect...I guess it forced the 'Edit Character' script to activate and allow you to change stuff if you wanted. But I digress...

You're perfectly safe changing your appearance AFAIK...done it so many times in the Fallout series and never had any stats problems.

N~dles

Thanks. Because this character took me about one and half an hour to get it right.
Alright, this topic can be marked "solved" now. Thanks again.

@ bft90697 - No problem, buddy. If you want to try out the mod I mentioned above, I looked it up on the Nexus. I've never used it, so I can't swear to how well it works. Might be worth keeping it as an option.

http://www.nexusmods.com/newvegas/mods/45717/?

N~dles