What spells were you talking about? The ones good for a face/Mage...?
Analyse Truth can certainly make negotiations or interrogations easier.
"Okay, I can raise it to 5000 nuyen but that's all I can afford, I swear!" BEEP, that's a lie!
Illusions require a bit more fantasy to use but are incredibly more versatile if you can come up with good things. Easy examples are using the Mask spells to be more easily liked: Yakuza tend to be predjudiced vs non-Japanese, metahumans and/or females. So Mask yourself to look like a Japanese gentleman! Need to be intimidating: don't mask yourself as a giant troll, it'll make you a target! Instead, create the illusion of 10 more trolls with big pointy sticks standing right behind you!
And, of course, manipulation spells. Alter Memory to make the guy believe you've been his best friend for years! If you're a good enough face you can make it work long enough. Control Emotions to make a target feel love, lust, hate, fear, make him lonely and in need of the special attention only you can offer or make him feel so confident he'll tell you his secret plan because no one can stop him anyway! Influence to get the guy to take a step outside for some fresh air or a trip to the bathroom, great moments to have a nice little chat away from all those people around him!
The list is endless, there's a lot of ways magic can make a face a lot better. Even just assensing a target can tell you his emotions and make your job a bit easier. Just make sure you're not caught, that could give the opposite effect!