CO2 laser is a good choice for wards removal, but not for freckles. Once the wound after co2 laser get heal, you could start the C6 treatment. The interval for c6 is two weeks. The treatment times really depends on what kind of pigmentation you have.The C6 treatment can remove the pigmentation, whitening your skin, smaller pore size, skin tightening..., it is kind of anti-aging treatment.