PDO and PCL threads are both dissolvable, but they are not the same material — and the difference is mostly about time.
PDO
PDO threads generally dissolve over roughly six to eight months.
PCL
PCL threads absorb more slowly — often over a much longer window — which can mean more sustained collagen stimulation.
Which to choose
If you are looking for a longer-acting option than PDO, PCL is often considered the next step. BeautyRay carries both NeoGenesis PDO and PCL threads.