I had a shellac soak-off and manicure. In total, 4 people worked on my nails during my visit which I found a bit odd. They also asked where I had previously had my nails done to criticize their technique. I heard them ask the same question to other clients who were there at the same time
They used a drill to gently drill off the very top layer of the shellac and then soaked my nails to remove the polish. They also filed and buffed my nails and added a treatment coat. Overall really happy!