A simple chic hairstyle is fine. You don't want an ostentatious hairstyle that will divert attention from what you are saying during an important presentation. No hairstyle screams simple elegance like a chignon.

The workplace is not a carnival for hair colour like electric red, purple and gold, you don't have to lose your female identity simply because you're in a corporate setting

Wearing soft pattern curls can help, avoid dramatic curls that have a life of their own

Avoid excessively long hair extension those don't look sophisticated.

Afro, cornrows, single braid, twist and locks are appropriate form the workplace, but keep your natural hair professional and tidy.