If you dreamed about your friend's hair getting longer: Agreements can affect your agenda, It is important how you take a stand. To see that your friend's hair is getting longer in your dream is a sign of entering a period when hair growth will be on your way and your troubles will end. It is also called as a sign of great changes and innovations that will occur in your life. It is also referred to as a harbinger of establishing good friendships and having solid friends.