How Many Extensions are in a Pack of Hotheads? Paris Leber June 11, 2018 20:16 Updated There are 20 strands in each full pack that make 10 complete extensions. Mini Packs and Fantasy Packs contain 12 strands that make 6 complete extensions. Rainbow Packs contain 24 strands that make 12 complete extensions. Micro Strands come in 20 Piece Packs. Comments 0 comments Please sign in to leave a comment.