Reply To: Does RLT have side effects? Home › Forums › Red Light Therapy › Does RLT have side effects? › Reply To: Does RLT have side effects? November 5, 2020 at 5:48 pm #1350 ReneeParticipant As for me, naah I don’t see any side effects and I’ve been using this for a long time now and all I can see are improvements. So, will continue on using this.