The builder gel is like a soak off gel only way thicker and you need to use it with nail forms or tips depending on your technique.
Being way runny than the polygel, the way you work this one on your nail is completely
different, because you cannot use the same type of brush.
1.First you need to apply base coat and cure
2. Apply the builder and cure
3. File the shape
4. Apply color gel and cure
5. Apply top coat and cure