Most offices in America, especially start-ups, are all about letting their employees come to work in business casual attire. The reason why some organizations prefer this unstuffy dress code is because not only is it comfortable, but it’s also very versatile and easy to follow.

However, not everyone seems to get that wearing business casual attire means that one still has to look professional in the workplace. Some have gone completely overboard and are now dressing purely for comfort, hence, track suits and t-shirts have become the norm in the work environment. This is the reason why people should be guided on the things that should be worn in a business casual environment.

Here are some ways to master business casual.

There’s no need to be stuffy, but do try to look professional

Business casual attire doesn’t mean getting decked out in Savile Row or busting out the power suit for work. But this doesn’t mean that you’re supposed to show up in a sloppy shirt, baggy slacks, and unkempt hair either.

Men can get a lot of mileage out of well-cut, flat front slacks, button-down shirts, a navy blazer, and a crewneck sweater. Meanwhile, women can wear colorful slacks, printed blouses, dresses, skirts, cardigans, and bold accessories.

Don’t wear anything that may cause offense or any item that is too risqué

Among these items are very short shorts and skirts, spaghetti-strapped tops (unless worn under a jacket or cardigan), message t-shirts, anything that’s too sheer, anything that shows your midriff, fishnet stockings, and low-cut blouses.

Pay attention to your grooming

Hair and makeup rules for a business casual environment are certainly a lot more relaxed than business formal attire, so you can play with nail, lip, and hair color. So go ahead and dye your hair a bright burgundy and rock deeper shades of lipstick. Men can have long hair but make sure that it’s clean and off your face.

For more, check out Jobs & Hire’s report on simple and practical ways to improve yourself.