UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

(Rule 14a-101)

INFORMATION REQUIRED IN PROXY STATEMENT

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

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☐	Preliminary Proxy Statement
☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material Pursuant to §240.14a-12

BIOLASE, INC.

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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☒	No fee required.
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☐	Fee paid previously with preliminary materials.
☐	Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.
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Your Vote Counts! BIOLASE, INC. 2021 Special Meeting Vote by November 18, 2021 11:59 PM ET Hextone, Inc. P.O. Box 91421 Farmingdale, NY 11735 148,294 322,224 OF 2 Ricky Campana P.O. Box 123456 Suite 500 30# 51 Mercedes Way Edgewood, NY 11717 FLASHID-JOB# You invested in BIOLASE, INC. and it’s time to vote! You have the right to vote on proposals being presented at the Special Meeting. This is an important notice regarding the availability of proxy material for the shareholder meeting to be held on November 19, 2021. Get informed before you vote View the Notice & Proxy Statement online OR you can receive a free paper or email copy of the material(s) by requesting prior to November 07, 2021. If you would like to request a copy of the material(s) for this and/or future shareholder meetings, you may (1) visit www.ProxyVote.com, (2) call 1-800-579-1639 or (3) send an email to sendmaterial@proxyvote.com. If sending an email, please include your control number (indicated below) in the subject line. Unless requested, you will not otherwise receive a paper or email copy. For complete information and to vote, visit www.ProxyVote.com Control # XXXX XXXX XXXX XXXX Smartphone users Vote in Person at the Meeting* Point your camera here and November 19, 2021 vote without entering a 10:00 AM PST control number BIOLASE Headquarters 27042 Towne Centre Drive Suite 270 Foothill Ranch, CA 92610 *If you choose to vote these shares in person at the meeting, you must request a “legal proxy.” To do so, please follow the instructions at www.ProxyVote.com or request a paper copy of the materials, which will contain the appropriate instructions. Please check the meeting materials for any special requirements for meeting attendance.

Vote at www.ProxyVote.com Control # XXXX XXXX XXXX XXXX THIS IS NOT A VOTABLE BALLOT BIOLASE, INC. This is an overview of the proposals being presented at the 2021 Special Meeting Vote by November 18, 2021 upcoming shareholder meeting. Please follow the instructions on 11:59 PM ET the reverse side to vote these important matters. Voting Items Board Recommends 1 To approve an amendment to the Company’s Certificate of Incorporation to effect a reverse stock split of the For Company common stock (without reducing the authorized number of shares of Company common stock). 2 To approve the adjournment of the Special Meeting, if necessary, in the reasonable discretion of the Chief Executive Officer and President of the Company, to solicit additional proxies if there are insufficient votes at the time of the For Special Meeting to approve Proposal 1. NOTE: The transaction of such other business as may properly come before the meeting, or any adjournment or postponement thereof. Under New York Stock Exchange rules, brokers may vote “routine” matters at their discretion if your voting instructions are not communicated to us at least 10 days before the meeting. We will nevertheless follow your instructions, even if the broker’s discretionary vote has already been given, provided your instructions are received prior to the meeting date. 1.00000 322,224 FLASHID-JOB# 148,294

0 2 B M Using a black ink pen, mark your votes with an X as shown in this example. Please do not write outside the designated areas. 03IWAC + + Proposals — The Board of Directors recommend a vote A FOR Proposals 1 & 2. 1. To amend the Company’s Certificate of Incorporation to effect a reverse stock split of Company common stock (without reducing the authorized number of shares of Company common stock). 2. To adjourn the special meeting, if necessary, in the reasonable discretion of the Chief Executive Officer and President of the Company, to solicit additional proxies if there are insufficient votes at the time of the special meeting to approve Proposal 1. For Against Abstain Except as described on this proxy card, this proxy when properly executed will be voted as directed or, if no direction is given, will be voted FOR the proposals listed above. Date (mm/dd/yyyy) — Please print date below. Signature 1 — Please keep signature within the box. Signature 2 — Please keep signature within the box. B Authorized Signatures — This section must be completed for your vote to count. Please date and sign below. NOTE: The transaction of such other business as may properly come before the meeting, or any adjournment or postponement thereof. q IF VOTING BY MAIL, SIGN, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE.q 2021 Special Meeting Proxy Card For Against Abstain 000004 MR A SAMPLE DESIGNATION (IF ANY) ADD 1 ADD 2 ADD 3 ADD 4 ADD 5 ADD 6 ENDORSEMENT LINE SACKPACK 1234 5678 9012 345 MMMMMMMMM MMMMMMMMMMMMMMM 5 1 6 8 8 2 MR A SAMPLE (THIS AREA IS SET UP TO ACCOMMODATE 140 CHARACTERS) MR A SAMPLE AND MR A SAMPLE AND MR A SAMPLE AND MR A SAMPLE AND MR A SAMPLE AND MR A SAMPLE AND MR A SAMPLE AND MR A SAMPLE AND C 1234567890 J N T C123456789 MMMMMMMMMMMM M MMMMMMM 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext If no electronic voting, delete QR code and control # Ä You may vote online or by phone instead of mailing this card. Online Go to www.investorvote.com/BIOL or scan the QR code — login details are located in the shaded bar below. Save paper, time and money! Sign up for electronic delivery at www.investorvote.com/BIOL Phone Call toll free 1-800-652-VOTE (8683) within the USA, US territories and Canada Votes submitted electronically must be received by 1:00 a.m., Pacific Time, on November 19, 2021. Your vote matters – here’s how to vote!

Small steps make an impact. Help the environment by consenting to receive electronic delivery, sign up at www.investorvote.com/BIOL q IF VOTING BY MAIL, SIGN, DETACH AND RETURN THE BOTTOM PORTION IN THE ENCLOSED ENVELOPE.q Change of Address — Please print new address below. Comments — Please print your comments below. C Non-Voting Items + + Proxy Solicited by Board of Directors for Special Meeting of Stockholders – November 19, 2021 The undersigned revokes all previous proxies, acknowledges receipt of the Notice of the Special Meeting of Stockholders to be held on November 19, 2021 and the Proxy Statement, and appoints John R. Beaver and Jennifer Bright and each of them, the proxy of the undersigned, with full power of substitution, to vote all shares of common stock of BIOLASE, Inc. (the “Company”) which the undersigned is entitled to vote, either on his or her own behalf or on behalf of any entity or entities, at the 2021 Special Meeting of Stockholders of the Company to be held at the Company’s corporate headquarters located at 27042 Towne Centre Drive, Suite 270, Foothill Ranch, CA 92610, on November 19, 2021, at 10:00 a.m. Pacific Time (the “Special Meeting”), and at any adjournment or postponement thereof, with the same force and effect as the undersigned might or could do if personally present thereat. The shares represented by this Proxy shall be voted in the manner set forth on this proxy card. If no direction is given, this Proxy will be voted FOR Proposals 1 & 2. In their discretion, the proxies are each authorized to vote upon other business as may properly come before the Special Meeting. By executing this Proxy, the undersigned hereby grants the named proxy holders discretionary authority to act upon all other matters incident to the conduct of the meeting or as may properly come before the meeting, or any adjournment thereof. (Items to be voted appear on reverse side) 2021 Special Meeting Proxy - BIOLASE, INC. Important notice regarding the Internet availability of proxy materials for the Special Meeting of Stockholders. The material is available at: www.edocumentview.com/BIOL 2021 Special Meeting of BIOLASE, Inc. Friday, November 19, 2021, 10:00 a.m. Pacific Time BIOLASE Headquarters 27042 Towne Centre Drive, Suite 270 Foothill Ranch, CA 92610