Using extensions can add some serious oomph to an otherwise dull upsyle. But how do you know what type of extension is the right fit for your client? Here, four experts weigh in on the best ways to achieve that perfect look.

1. "Leave enough hair around the perimeter to cover the attachment sites. To ensure the longevity of a guest’s updo, set the hair using your favorite hot tool, and pin each curl, allowing it to cool completely before removing.”
—Aurezu Kuhzarani, Hotheads Hair Extensions

2. “An updo with extensions works with freshly washed hair, dirty hair…