What type of gel nails require soaking in acetone to remove them?

Soft UV gel nails require soaking in acetone for removal because they are designed to break down easily when exposed to this solvent. These gels are typically lighter and more flexible compared to other types of gels and do not adhere as strongly to the natural nail. The acetone penetrates the gel, causing it to dissolve, which allows for safe and effective removal without tearing or damaging the underlying nail.

In contrast, hard gel nails and builder gel nails are formulated to create a more durable and long-lasting structure that is resistant to solvents like acetone, necessitating filing for removal instead. Polygel nails, which blend the qualities of acrylic and gel, also require a different removal process, usually involving filing rather than soaking. Thus, soft UV gel nails specifically stand out as the type that is removable by soaking in acetone.