Lace glue, also known as wig glue or hairpiece adhesive, is a type of adhesive used to secure lace wigs, lace frontals, and hairpieces onto the scalp. It is often made with medical-grade adhesive that is safe for use on skin and hair. Lace glue comes in different types, including liquid adhesive, tape, and cream. Liquid adhesive is applied directly to the scalp using a brush, while tape is used to secure the lace wig or hairpiece to the scalp. Cream adhesive is often used as a touch-up or reinforcement for the liquid adhesive.