I changed my aligner changing time to 3day with using PBM Healing. That is suitable for my teeth that changing time. I spend 3 month without using PBM Healing, that was too long to change my aligner. But at this time 3days changing is comfortable for me. Without using PBM Healing, I felt that was very long so I decided to buy PBM Healing. That was great choice for me.
