Final answer:
The fusion method in hair extensions utilizes a bonding material activated by heat to attach strands of artificial hair to the client's natural hair.
Step-by-step explanation:
In the fusion method of hair extension application, individual strands of artificial hair are attached to small sections of the client’s own hair. The bonding material used in this process, typically a type of glue or keratin-based adhesive, is activated by heat. A specialized tool that generates heat, such as a fusion connector or a hair extension iron, is used to melt the adhesive, which then fuses the extension to the natural hair when it cools and solidifies.
This method is popular because it offers a durable, long-lasting result. However, the process requires precision and should be done by a trained professional to avoid damage to the client’s natural hair. The application technique allows for a natural look and freedom of styling, as the extensions can typically withstand heat from styling tools and feel secure for several months before requiring maintenance.