Reply To: Red or blue? for my acne Home › Forums › Red Light Therapy › Red or blue? for my acne › Reply To: Red or blue? for my acne November 14, 2020 at 4:25 am #1603 NicholaParticipant @Kathleenleen001 – that’s from rubylux, you can go ahead and browse their bulbs and you will see that. There’s also a bigger LED bulb than that.