Are You a Good Candidate for Hair Extensions? An Honest Guide One of the things we're most committed to at Welcome & Wanted is honesty — especially when it comes to extensions. Extensions are a significant investment and installing them on hair that isn't ready is something we won't do, even if a client really wants them. So here's the real breakdown: what makes someone a great extension candidate, what might mean you need to wait, and what you can do to get there. Signs You