United States securities and exchange commission logo





                          December 13, 2022

       Justin M. Hall
       Chief Executive Officer
       NovaBay Pharmaceuticals, Inc.
       2000 Powell Street, Suite 1150
       Emeryville, CA 94608

                                                        Re: NovaBay
Pharmaceuticals, Inc.
                                                            Registration
Statement on Form S-1
                                                            Filed December 9,
2022
                                                            File No. 333-268738

       Dear Justin M. Hall:

              This is to advise you that we have not reviewed and will not
review your registration
       statement.

               Please refer to Rules 460 and 461 regarding requests for
acceleration. We remind you
       that the company and its management are responsible for the accuracy and
adequacy of their
       disclosures, notwithstanding any review, comments, action or absence of
action by the staff.

                                                        Please contact
Christine Westbrook at 202-551-5019 with any questions.




                          Sincerely,


                          Division of Corporation Finance

                          Office of Life Sciences
       cc:                                              Abby E. Brown, Esq.