This man isn’t putting random colorful material in his ear—it’s the process of making custom-fit earphones or earplugs. A professional first inserts a small foam piece to protect the eardrum, with a string attached for easy removal. Then, a soft molding material is injected into the ear so it perfectly conforms to the ear canal’s shape. After a few minutes, it hardens and forms an exact impression. This mold is sent to the manufacturer to create personalized earphones that fit more comfortably a