Extensions aren’t just for extra length. “For women who want fuller hair, extensions are a quick, easy, and beautiful fix,” says Panos. If you want to take the DIY route or need temporary fullness for one style, choose clip-in options. Keep them the same length as the rest of your hair, and add in a few pieces throughout the crown of your head. For a more long-term fix, see a pro. Panos notes that professionally-applied tape-in extensions blend in seamlessly with your natural hair and can last four to five weeks.