When should a beard, mustache, and sideburns typically be trimmed?

Trimming a beard, mustache, and sideburns is typically done after a haircut because this ensures that the overall look is cohesive and balanced. After completing the haircut, the stylist can assess the client's hair length, shape, and style, allowing for an accurate trim of facial hair to complement the haircut. This approach helps maintain the desired proportions and overall aesthetic.

Additionally, performing this task at this point allows the stylist to see how the facial hair frames the client's face post-haircut, contributing to a more polished final appearance. Trimming before styling, shampooing, or during the shampooing process may not provide the same level of clarity regarding the final look and can lead to mismatched lengths or styles.