diff --git a/releases/unreleased/mark-individuals-as-reviewed.yml b/releases/unreleased/mark-individuals-as-reviewed.yml
new file mode 100644
index 00000000..e7042629
--- /dev/null
+++ b/releases/unreleased/mark-individuals-as-reviewed.yml
@@ -0,0 +1,17 @@
+---
+title: Mark individuals as reviewed
+category: added
+author: Eva Millán <evamillan@bitergia.com>
+issue: null
+notes: >
+  Individuals can now be marked as reviewed to keep track
+  of which profiles have already been checked and when.
+  A profile can be marked as reviewed more than once, it
+  will show the date of the last review. If there have
+  been any changes to the profile data since the last review,
+  the review button displays a warning icon.
+
+  The list of individuals can be filtered by whether they
+  have been reviewed and by their review date. The list can
+  also be ordered by review date. 
+
diff --git a/ui/src/components/IndividualsTable.vue b/ui/src/components/IndividualsTable.vue
index d28692fa..cca2e1c8 100644
--- a/ui/src/components/IndividualsTable.vue
+++ b/ui/src/components/IndividualsTable.vue
@@ -40,6 +40,10 @@
             title: 'Last updated',
             value: 'lastModified',
           },
+          {
+            title: 'Last reviewed',
+            value: 'lastReviewed',
+          },
           {
             title: 'Created date',
             value: 'createdAt',
diff --git a/ui/src/components/Search.vue b/ui/src/components/Search.vue
index d0261711..41a2a2c0 100644
--- a/ui/src/components/Search.vue
+++ b/ui/src/components/Search.vue
@@ -153,6 +153,14 @@ export default {
           filter: "isEnrolled",
           type: "boolean",
         },
+        {
+          filter: "isReviewed",
+          type: "boolean",
+        },
+        {
+          filter: "lastReviewed",
+          type: "date",
+        },
       ],
     },
     orderOptions: {
diff --git a/ui/src/views/SearchHelp.vue b/ui/src/views/SearchHelp.vue
index 6950d171..9b03caf1 100644
--- a/ui/src/views/SearchHelp.vue
+++ b/ui/src/views/SearchHelp.vue
@@ -2,16 +2,16 @@
   <v-main>
     <v-card class="mx-auto elevation-0 mt-6 section" max-width="800px">
       <v-card-title class="header"> Search syntax </v-card-title>
-      <v-card-text class="pa-8">
-        <p class="subtitle-2">Search by term</p>
-        <p>
+      <v-card-text class="pa-8 pt-0">
+        <p class="text-subtitle-2">Search by term</p>
+        <p class="text-body-2">
           You can find individuals whose identities contain a particular term in
           their name, email address or username by entering the term on the
           search box. You can combine this query with any filters, for example
           <code>John lastUpdated:>2020-11-01</code>.
         </p>
-        <p class="subtitle-2">Filter by last updated date</p>
-        <p>
+        <p class="text-subtitle-2">Filter by last updated date</p>
+        <p class="text-body-2">
           You can filter individuals based on when they were modified, using the
           <code>lastUpdated</code> filter.
         </p>
@@ -66,22 +66,22 @@
           </template>
         </v-simple-table>
 
-        <p class="subtitle-2 mt-8">Search for bots</p>
-        <p>
+        <p class="text-subtitle-2">Search for bots</p>
+        <p class="text-body-2">
           You can search for individuals based on whether they are marked as
           bots, using the <code>isBot:true</code> and <code>isBot:false</code>
           filters.
         </p>
-        <p class="subtitle-2 mt-8">Filter by gender</p>
-        <p>
+        <p class="text-subtitle-2">Filter by gender</p>
+        <p class="text-body-2">
           You can search for individuals based on their gender, using the
           <code>gender</code> filter. Genders that include spaces should be
           wrapped in double quotes. For example:
           <code>gender:"non binary"</code>.
         </p>
 
-        <p class="subtitle-2 mt-6">Filter by country</p>
-        <p>
+        <p class="text-subtitle-2">Filter by country</p>
+        <p class="text-body-2">
           You can filter individuals based on their country using the
           <code>country</code> filter.
         </p>
@@ -114,24 +114,24 @@
           </template>
         </v-simple-table>
 
-        <p class="subtitle-2 mt-8">Filter by data source</p>
-        <p>
+        <p class="text-subtitle-2">Filter by data source</p>
+        <p class="text-body-2">
           You can search for individuals based on the data source of their
           identities, using the <code>source</code> filter. Source names that
           include spaces should be wrapped between double quotes. For example:
           <code>source:"Stack Exchange"</code>.
         </p>
 
-        <p class="subtitle-2 mt-8">Filter by enrollment</p>
-        <p>
+        <p class="text-subtitle-2">Filter by enrollment</p>
+        <p class="text-body-2">
           You can search for individuals based on the organizations they are
           enrolled in, using the <code>enrollment</code> filter. Organizations
           that include spaces should be wrapped between double quotes. For
           example: <code>enrollment:"Dumbledore's Army"</code>.
         </p>
 
-        <p class="subtitle-2">Filter by enrollment date</p>
-        <p>
+        <p class="text-subtitle-2">Filter by enrollment date</p>
+        <p class="text-body-2">
           You can filter individuals based on when they were affiliated to an
           organization, using the <code>enrollmentDate</code> filter.
         </p>
@@ -189,12 +189,76 @@
           </template>
         </v-simple-table>
 
-        <p class="subtitle-2 mt-8">Filter by enrollment status</p>
-        <p>
+        <p class="text-subtitle-2">Filter by enrollment status</p>
+        <p class="text-body-2">
           You can search for individuals based on whether they have any
           affiliation, using the <code>isEnrolled:true</code> and
           <code>isEnrolled:false</code> filters.
         </p>
+
+        <p class="text-subtitle-2">Filter by review status</p>
+        <p class="text-body-2">
+          You can search for individuals based on whether they have been marked
+          as reviewed, using the <code>isReviewed:true</code> and
+          <code>isReviewed:false</code> filters.
+        </p>
+
+        <p class="text-subtitle-2">Filter by review date</p>
+        <p class="text-body-2">
+          You can filter individuals based on when they were last marked as
+          reviewed, using the <code>lastReviewed</code> filter.
+        </p>
+        <v-simple-table>
+          <template v-slot:default>
+            <thead>
+              <tr>
+                <th class="text-left" width="30%">Filter</th>
+                <th class="text-left">Explanation</th>
+              </tr>
+            </thead>
+            <tbody>
+              <tr>
+                <td width="30%"><code>lastReviewed:>YYYY-MM-DD</code></td>
+                <td>
+                  Matches individuals that were reviewed after the given date.
+                </td>
+              </tr>
+              <tr>
+                <td width="30%"><code>lastReviewed:>=YYYY-MM-DD</code></td>
+                <td>
+                  Matches individuals that were reviewed on or after the given
+                  date.
+                </td>
+              </tr>
+              <tr>
+                <td width="30%">
+                  <code>lastReviewed:&lt;YYYY-MM-DD</code>
+                </td>
+                <td>
+                  Matches individuals that were reviewed before the given date.
+                </td>
+              </tr>
+              <tr>
+                <td width="30%">
+                  <code>lastReviewed:&lt;=YYYY-MM-DD</code>
+                </td>
+                <td>
+                  Matches individuals that were reviewed on or before the given
+                  date.
+                </td>
+              </tr>
+              <tr>
+                <td width="30%">
+                  <code>lastReviewed:YYYY-MM-DD..YYYY-MM-DD</code>
+                </td>
+                <td>
+                  Matches individuals that were reviewed between the given
+                  dates.
+                </td>
+              </tr>
+            </tbody>
+          </template>
+        </v-simple-table>
       </v-card-text>
     </v-card>
   </v-main>
@@ -205,3 +269,36 @@ export default {
   name: "SearchHelp",
 };
 </script>
+<style scoped>
+.text-subtitle-2 {
+  padding-bottom: 1.2rem;
+  padding-top: 1.654rem;
+  font-size: 1rem;
+}
+
+th,
+td {
+  padding: 1.09rem 0;
+}
+
+th {
+  font-size: 0.813rem;
+  font-weight: 500;
+}
+
+td {
+  border-top: thin solid rgba(0, 0, 0, 0.08);
+}
+
+td:first-child {
+  padding-right: 1.09rem;
+}
+
+code {
+  border-radius: 4px;
+  font-size: 90%;
+  line-height: 1.25rem;
+  padding: 0.1rem 0.25rem;
+  background-color: #f2f3f5;
+}
+</style>