Exhibit 24.1

                               November 19, 2020

                               POWER OF ATTORNEY


        KNOW ALL BY THESE PRESENTS, that the undersigned hereby constitutes and
appoints each of Eric Tardif and Kevin Herde, signing singly, the undersigned's
true and lawful attorney-in-fact to: (i) execute for and on behalf of the
undersigned, in the undersigned's capacity as an officer and/or director and/or
owner of greater than 10% of the outstanding shares of Class A common stock of
Maravai LifeSciences Holdings, Inc., a Delaware corporation (the "Company"),
Forms 3, 4 and 5 (including any amendments, supplements or exhibits thereto) in
accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules thereunder; (ii) do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and execute any such
Form 3, 4 or 5 (including any amendments, supplements or exhibits thereto) and
timely file such form with the United States Securities and Exchange Commission
(the "SEC") and any stock exchange or similar authority, including the New York
Stock Exchange, and including without limitation the filing of a Form ID or any
other documents necessary or appropriate to enable the undersigned to file the
Form 3, 4 and 5 electronically with the SEC; (iii) seek or obtain, as the
undersigned's representative and on the undersigned's behalf, information on
transactions in the Company's securities from any third party, including
brokers, employee benefit plan administrators and trustees, and the undersigned
hereby authorizes any such person to release any such information to each of the
undersigned's attorneys-in-fact appointed by this Power of Attorney and ratifies
any such release of information; and (iv) take any other action of any type
whatsoever in connection with the foregoing which, in the opinion of such
attorney-in-fact, may be of benefit to, in the best interest of, or legally
required by, the undersigned, it being understood that the documents executed by
such attorney-in-fact on behalf of the undersigned pursuant to this Power of
Attorney shall be in such form and shall contain such terms and conditions as
such attorney-in-fact may approve in such attorney-in-fact's discretion.

        The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and the
rights and powers herein granted.  The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.

        This Power of Attorney shall remain in full force and effect until the
earlier of (i) the date on which the undersigned is no longer required to file
Forms 3, 4 or 5 with respect to the undersigned's holdings of and transactions
in securities issued by the Company; (ii) as to the appointment of each of Eric
Tardif and Kevin Herde, upon his respective resignation or termination as an
employee of the Company; and (iii) the revocation of this Power of Attorney
by the undersigned in a signed writing delivered to each of such attorneys-
in-fact.  This Power of Attorney may be filed with the Commission as a
conforming statement of the authority granted herein.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of date first written above.

                                        Signed and acknowledged:

                                        /s/ Kurt Oreshack
                                        Kurt Oreshack