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  <xs:element name="DeferredCommissionsRelatedToLoyaltyPrograms" id="mtex_DeferredCommissionsRelatedToLoyaltyPrograms" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="NumberOfWeeksFollowingBusinessPeriodEndForPaymentOfPackSalesCommissions" id="mtex_NumberOfWeeksFollowingBusinessPeriodEndForPaymentOfPackSalesCommissions" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="LoyaltyPointsVested" id="mtex_LoyaltyPointsVested" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="ValuationAllowancesAndReservesDeductionsCurrentYearReturns" id="mtex_ValuationAllowancesAndReservesDeductionsCurrentYearReturns" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="ValuationAllowancesAndReservesChargedToCostAndExpenseCurrentYearSales" id="mtex_ValuationAllowancesAndReservesChargedToCostAndExpenseCurrentYearSales" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="ActualReturnsOrCreditsRelatedToPriorPeriods" id="mtex_ActualReturnsOrCreditsRelatedToPriorPeriods" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="PropertyPlantAndEquipmentNetExcludingConstructionInProgress" id="mtex_PropertyPlantAndEquipmentNetExcludingConstructionInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="CommissionsAndIncentivesPayable" id="mtex_CommissionsAndIncentivesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="CommissionsAndIncentivesExpense" id="mtex_CommissionsAndIncentivesExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="IncreaseDecreaseInDeferredCommissions" id="mtex_IncreaseDecreaseInDeferredCommissions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="InterestPaidOnCapitalLeasesAndFinancingArrangements" id="mtex_InterestPaidOnCapitalLeasesAndFinancingArrangements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" />
  <xs:element name="IncreaseDecreaseInCommissionsAndIncentivesPayable" id="mtex_IncreaseDecreaseInCommissionsAndIncentivesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" />
  <xs:element name="RecordCompensationExpenseInFutureAbstract" id="mtex_RecordCompensationExpenseInFutureAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="TaxBenefitAssociatedWithUnrecognizedCompensationExpense" id="mtex_TaxBenefitAssociatedWithUnrecognizedCompensationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" />
  <xs:element name="GrossUnrecognizedCompensationExpenseYearTwo" id="mtex_GrossUnrecognizedCompensationExpenseYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="TotalNetUnrecognizedCompensationExpenseYearTwo" id="mtex_TotalNetUnrecognizedCompensationExpenseYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="TaxBenefitAssociatedWithUnrecognizedCompensationExpenseYearThree" id="mtex_TaxBenefitAssociatedWithUnrecognizedCompensationExpenseYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="TotalGrossUnrecognizedCompensationExpenseYearFour" id="mtex_TotalGrossUnrecognizedCompensationExpenseYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="TaxBenefitAssociatedWithUnrecognizedCompensationExpenseYearTwo" id="mtex_TaxBenefitAssociatedWithUnrecognizedCompensationExpenseYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="TotalNetUnrecognizedCompensationExpense" id="mtex_TotalNetUnrecognizedCompensationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="PercentagesOfStockOptionOwnershipConsideredForHigherExercisePriceOfOption" id="mtex_PercentagesOfStockOptionOwnershipConsideredForHigherExercisePriceOfOption" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="TotalNetUnrecognizedCompensationExpenseYearFour" id="mtex_TotalNetUnrecognizedCompensationExpenseYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="GrossUnrecognizedCompensationExpenseYearThree" id="mtex_GrossUnrecognizedCompensationExpenseYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="TotalNetUnrecognizedCompensationExpenseYearThree" id="mtex_TotalNetUnrecognizedCompensationExpenseYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="NumberOfActiveStockBasedCompensationPlan" id="mtex_NumberOfActiveStockBasedCompensationPlan" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="GrossUnrecognizedCompensationExpenseToBeRecognizedInCurrentFiscalYear" id="mtex_GrossUnrecognizedCompensationExpenseToBeRecognizedInCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="OptionExercisePriceAsPercentagesOfClosingExercisePrice" id="mtex_OptionExercisePriceAsPercentagesOfClosingExercisePrice" type="num:percentItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="TaxBenefitAssociatedWithUnrecognizedCompensationExpenseYearFour" id="mtex_TaxBenefitAssociatedWithUnrecognizedCompensationExpenseYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" />
  <xs:element name="Two008PlanMember" id="mtex_Two008PlanMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="LoyaltyDeferredRevenueProgramTableTextBlock" id="mtex_LoyaltyDeferredRevenueProgramTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="SalesReturnReserveTableTextBlock" id="mtex_SalesReturnReserveTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="ScheduleOfInventoryBalancesByGeographicalAreaTableTextBlock" id="mtex_ScheduleOfInventoryBalancesByGeographicalAreaTableTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="OtherAssetsPolicyTextBlock" id="mtex_OtherAssetsPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="OtherLongTermLiabilitiesPolicyTextBlock" id="mtex_OtherLongTermLiabilitiesPolicyTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="LitigationAbstract" id="mtex_LitigationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="LitigationDisclosureTextBlock" id="mtex_LitigationDisclosureTextBlock" type="nonnum:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" abstract="false" xbrli:periodType="duration" />
  <xs:element name="DocumentAndEntityInformationAbstract" id="mtex_DocumentAndEntityInformationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="SamuelLCasterAndWonderEnterprisesLLCMember" id="mtex_SamuelLCasterAndWonderEnterprisesLLCMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="MsDianaAnselmoAndNewDayTodayCorporationMember" id="mtex_MsDianaAnselmoAndNewDayTodayCorporationMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
  <xs:element name="BusanCustomOfficeMember" id="mtex_BusanCustomOfficeMember" type="nonnum:domainItemType" substitutionGroup="xbrli:item" nillable="true" abstract="true" xbrli:periodType="duration" />
</xs:schema>