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    <periodOfReport>2026-10-19</periodOfReport>

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    <issuer>
        <issuerCik>0001024305</issuerCik>
        <issuerName>COTY INC.</issuerName>
        <issuerTradingSymbol>COTY</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001674510</rptOwnerCik>
            <rptOwnerName>Zafar Ayesha</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>350 FIFTH AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10118</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>SVP Group Controller</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

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                <equitySwapInvolved>0</equitySwapInvolved>
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                </directOrIndirectOwnership>
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        <derivativeTransaction>
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                <underlyingSecurityTitle>
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                    <value>27028</value>
                </underlyingSecurityShares>
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    <footnotes>
        <footnote id="F1">Upon vesting, each Restricted Stock Unit settled for one share of Class A Common Stock of the Issuer.</footnote>
        <footnote id="F2">Represents shares surrendered to the Issuer in connection with the vesting of restricted stock units to satisfy the income tax withholding and remittance obligations of the Reporting Person at a net settlement price equal to the closing price of Class A Common Stock on the New York Stock Exchange on the vesting date and does not represent a sale by the Reporting Person.</footnote>
        <footnote id="F3">Represents shares of Class A common stock acquired upon the partial vesting of a performance restricted stock unit grant originally eligible to vest based on the achievement of multiple independent performance criteria.  The Company achieved 100% of the target for the performance criteria related to ESG ratings improvement,  which accounted for 10% of the total vesting weighting. Because the remaining performance criteria were not achieved, the corresponding 90% of the total target award opportunity was unearned and cancelled without any share issuance.</footnote>
        <footnote id="F4">Represents shares surrendered to the Issuer in connection with the vesting of performance restricted stock units to satisfy the income tax withholding and remittance obligations of the Reporting Person at a net settlement price equal to the closing price of Class A Common Stock on the New York Stock Exchange on the vesting date and does not represent a sale by the Reporting Person.</footnote>
        <footnote id="F5">Upon vesting, each Restricted Stock Unit settles for one share of Class A Common Stock of the Issuer. Subject to certain vesting conditions and exceptions, the Restricted Stock Units vest as follows: 1/3 on October 19, 2027, 1/3 on October 19, 2028 and 1/3 on October 19, 2029.</footnote>
        <footnote id="F6">Upon vesting, each Restricted Stock Unit will settle for one share of Class A common stock of Coty Inc. Each Restricted Stock Unit vests on October 19, 2029, subject to certain vesting conditions and exceptions.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Christina Kiely, Attorney-in-Fact</signatureName>
        <signatureDate>2026-10-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
