<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xml:lang="en-US"
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2021"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="tars-20220811.xsd" xlink:type="simple"/>
    <context id="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001819790</identifier>
        </entity>
        <period>
            <startDate>2022-08-11</startDate>
            <endDate>2022-08-11</endDate>
        </period>
    </context>
    <dei:EntityCentralIndexKey
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV80L2ZyYWc6Nzc5NzAzODY0ZGMxNDgwYzkwZGJlMTA0OTcxZTE5OWYvdGFibGU6ZTVlY2M5MDEyNDFmNDBkM2JlZGI3ZmVjOGMzMWVmMjYvdGFibGVyYW5nZTplNWVjYzkwMTI0MWY0MGQzYmVkYjdmZWM4YzMxZWYyNl8xLTEtMS0xLTM1Nzgx_a62ad4f2-38a8-47e6-bded-dffd3599c183">0001819790</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV80L2ZyYWc6Nzc5NzAzODY0ZGMxNDgwYzkwZGJlMTA0OTcxZTE5OWYvdGFibGU6ZTVlY2M5MDEyNDFmNDBkM2JlZGI3ZmVjOGMzMWVmMjYvdGFibGVyYW5nZTplNWVjYzkwMTI0MWY0MGQzYmVkYjdmZWM4YzMxZWYyNl8yLTEtMS0xLTM1Nzgx_5320bd80-b6ce-43f2-b6e3-ce5066229540">false</dei:AmendmentFlag>
    <dei:DocumentType
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzEz_f7911ce0-d38f-4c49-bc3e-3e80c4e763bc">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzE0_767579cd-dbc8-4111-ae67-6f3d64a4e5e3">2022-08-11</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzE1_84972703-05fb-4b19-82e9-d7ec28252dee">TARSUS PHARMACEUTICALS, INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6MTYzNDc1MzUyNGE0NDE2ZWJjNjJiYTY2MWVhNjkyODAvdGFibGVyYW5nZToxNjM0NzUzNTI0YTQ0MTZlYmM2MmJhNjYxZWE2OTI4MF8wLTAtMS0xLTM1Nzgx_9fb55700-35e2-4c6e-b0c3-8083f6770490">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6MTYzNDc1MzUyNGE0NDE2ZWJjNjJiYTY2MWVhNjkyODAvdGFibGVyYW5nZToxNjM0NzUzNTI0YTQ0MTZlYmM2MmJhNjYxZWE2OTI4MF8wLTEtMS0xLTM1Nzgx_d12174c9-5f40-42a3-8964-84e825cadb2b">001-39614</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6MTYzNDc1MzUyNGE0NDE2ZWJjNjJiYTY2MWVhNjkyODAvdGFibGVyYW5nZToxNjM0NzUzNTI0YTQ0MTZlYmM2MmJhNjYxZWE2OTI4MF8wLTMtMS0xLTM1Nzgx_23c169e1-1ec3-4831-9f90-2b5244279eb8">81-4717861</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzE2_1b16ab3e-e077-4f6a-834e-bf6e4dd55294">15440 Laguna Canyon Road, Suite 160</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzE3_87a63e4e-eea7-4a85-952d-c29ea6a6103a">Irvine</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzEw_1cc8772a-02c8-4379-8911-63986efa5f3a">CA</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzA4_2dec1d5e-b4d0-4759-bdeb-89c3fa6f8b69">92618</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzEx_1a7ed64a-4c82-4e0d-b054-265905f58c3a">949</dei:CityAreaCode>
    <dei:LocalPhoneNumber
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzEy_b8150be0-2b44-4250-bc7a-e6e218ff2597">409-9820</dei:LocalPhoneNumber>
    <dei:WrittenCommunications
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6YzYzNWRkMTdjYWY4NDA1OGE1ODUyMDE5MjJlMmNkOGQvdGFibGVyYW5nZTpjNjM1ZGQxN2NhZjg0MDU4YTU4NTIwMTkyMmUyY2Q4ZF8wLTAtMS0xLTM1Nzgx_7ccbef13-880a-4541-9cae-afc2f51b793c">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6YzYzNWRkMTdjYWY4NDA1OGE1ODUyMDE5MjJlMmNkOGQvdGFibGVyYW5nZTpjNjM1ZGQxN2NhZjg0MDU4YTU4NTIwMTkyMmUyY2Q4ZF8yLTAtMS0xLTM1Nzgx_9de61306-8906-4187-a64b-817058bdaf80">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6YzYzNWRkMTdjYWY4NDA1OGE1ODUyMDE5MjJlMmNkOGQvdGFibGVyYW5nZTpjNjM1ZGQxN2NhZjg0MDU4YTU4NTIwMTkyMmUyY2Q4ZF80LTAtMS0xLTM1Nzgx_163c78a8-43af-423b-a16c-14f960c738eb">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6YzYzNWRkMTdjYWY4NDA1OGE1ODUyMDE5MjJlMmNkOGQvdGFibGVyYW5nZTpjNjM1ZGQxN2NhZjg0MDU4YTU4NTIwMTkyMmUyY2Q4ZF82LTAtMS0xLTM1Nzgx_5979ac69-715f-45f9-942d-8ef977509f51">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6YzMwMTMzZTdmZjU1NGQ3Y2JhNjg1Njk4OGFiYTBkZGUvdGFibGVyYW5nZTpjMzAxMzNlN2ZmNTU0ZDdjYmE2ODU2OTg4YWJhMGRkZV8xLTAtMS0xLTM1Nzgx_2a40b284-7693-4e13-9744-ebafa6d8bb66">Common Stock, $0.0001 par value per share</dei:Security12bTitle>
    <dei:TradingSymbol
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6YzMwMTMzZTdmZjU1NGQ3Y2JhNjg1Njk4OGFiYTBkZGUvdGFibGVyYW5nZTpjMzAxMzNlN2ZmNTU0ZDdjYmE2ODU2OTg4YWJhMGRkZV8xLTEtMS0xLTM1Nzgx_aa04971d-deb1-4db9-8701-338d8a5e21ff">TARS</dei:TradingSymbol>
    <dei:SecurityExchangeName
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGFibGU6YzMwMTMzZTdmZjU1NGQ3Y2JhNjg1Njk4OGFiYTBkZGUvdGFibGVyYW5nZTpjMzAxMzNlN2ZmNTU0ZDdjYmE2ODU2OTg4YWJhMGRkZV8xLTItMS0xLTM1NzgxL3RleHRyZWdpb246ZGE4YTA1YWJhYjM3NGI2MDg0OTRjZDhhM2FkY2FkZWZfMzI_b467684a-0769-4ef2-ae71-eabc53c4fc3f">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzE4_ea6e46fe-2013-4e08-9f55-5955cc140b7b">true</dei:EntityEmergingGrowthCompany>
    <dei:EntityExTransitionPeriod
      contextRef="ia5079045e35345bfbed1f30122cb88f5_D20220811-20220811"
      id="id3VybDovL2RvY3MudjEvZG9jOmU2ODFiZWVlMjBhZTRkNmE5M2VkMjI5NGEzYjc0NTM1L3NlYzplNjgxYmVlZTIwYWU0ZDZhOTNlZDIyOTRhM2I3NDUzNV8xL2ZyYWc6NDA2Mjk5NDg1MDU1NDliZWE1ODRjMTA5NjEzMThhMTUvdGV4dHJlZ2lvbjo0MDYyOTk0ODUwNTU0OWJlYTU4NGMxMDk2MTMxOGExNV8xMzA5_69004f5b-b894-4460-8f89-fdffba6a656a">true</dei:EntityExTransitionPeriod>
</xbrl>
