Cold fusion technique without heat, using a mild glue to preserve natural hair. Each package includes 50g, or 20 pieces for a total of 10 sandwiches. This method must be applied by a professional and can last 6 to 10 weeks, depending on the density of the client's natural hair. Suitable for most hair types, this technique offers major advantages: speed of installation and reusability. Due to the amount of hair on each strip, this technique provides excellent coverage, making it ideal for people with short or square hair wanting to conceal their natural hair.