diff --git a/packages/algoliasearch-helper/src/SearchParameters/index.js b/packages/algoliasearch-helper/src/SearchParameters/index.js
index cff47af3a7..33ca84a5c1 100644
--- a/packages/algoliasearch-helper/src/SearchParameters/index.js
+++ b/packages/algoliasearch-helper/src/SearchParameters/index.js
@@ -365,9 +365,16 @@ SearchParameters.prototype = {
    * @return {SearchParameters}
    */
   addFacetRefinement : function addFacetRefinement( facet, value ) {
+    if( this.isRefined( facet, value ) ) {
+      return this;
+    }
+
     return this.mutateMe( function( m ) {
       m.page = 0;
-      m.facetsRefinements[ facet ] = value;
+      if( !m.facetsRefinements[ facet ] ) {
+        m.facetsRefinements[ facet ] = [];
+      }
+      m.facetsRefinements[ facet ].push( value );
     } );
   },
   /**
@@ -403,15 +410,29 @@ SearchParameters.prototype = {
     } );
   },
   /**
-   * Remove a refinement set on facet.
+   * Remove a refinement set on facet. If a value is provided, it will clear the
+   * refinement for the given value, otherwise it will clear all the refinement
+   * values for the facetted attribute.
    * @method
    * @param {string} facet
+   * @param {string} value
    * @return {SearchParameters}
    */
-  removeFacetRefinement : function removeFacetRefinement( facet ) {
+  removeFacetRefinement : function removeFacetRefinement( facet, value ) {
     return this.mutateMe( function( m ) {
       m.page = 0;
-      m._clearFacetRefinements( facet );
+      if( value ) {
+        var idx = m.facetsRefinements[ facet ].indexOf( value );
+        if( idx > -1 ) {
+          m.facetsRefinements[ facet ].splice( idx, 1 );
+          if( m.facetsRefinements[ facet ].length === 0 ) {
+            delete m.facetsRefinements[ facet ];
+          }
+        }
+      }
+      else {
+        m._clearFacetRefinements( facet );
+      }
     } );
   },
   /**
@@ -519,7 +540,7 @@ SearchParameters.prototype = {
    */
   toggleFacetRefinement : function toggleFacetRefinement( facet, value ) {
     if( this.isFacetRefined( facet, value ) ) {
-      return this.removeFacetRefinement( facet );
+      return this.removeFacetRefinement( facet, value );
     }
     else {
       return this.addFacetRefinement( facet, value );
@@ -563,7 +584,8 @@ SearchParameters.prototype = {
    * @return {boolean}
    */
   isFacetRefined : function isFacetRefined( facet, value ) {
-    return this.facetsRefinements[ facet ] === value;
+    return this.facetsRefinements[ facet ] &&
+           this.facetsRefinements[ facet ].indexOf( value ) !== -1;
   },
   /**
    * Returns true if the couple (facet, value) is excluded
diff --git a/packages/algoliasearch-helper/src/algoliasearch.helper.js b/packages/algoliasearch-helper/src/algoliasearch.helper.js
index cb7ac94d7f..aac13635f6 100644
--- a/packages/algoliasearch-helper/src/algoliasearch.helper.js
+++ b/packages/algoliasearch-helper/src/algoliasearch.helper.js
@@ -438,8 +438,10 @@ AlgoliaSearchHelper.prototype._hasDisjunctiveRefinements = function( facet ) {
 AlgoliaSearchHelper.prototype._getFacetFilters = function( facet ) {
   var facetFilters = [];
 
-  forEach( this.state.facetsRefinements, function( facetValue, facetName ) {
-    facetFilters.push( facetName + ":" + facetValue );
+  forEach( this.state.facetsRefinements, function( facetValues, facetName ) {
+    forEach( facetValues, function( facetValue ) {
+      facetFilters.push( facetName + ":" + facetValue );
+    } );
   } );
 
   forEach( this.state.facetsExcludes, function( facetValues, facetName ) {
diff --git a/packages/algoliasearch-helper/test/spec/SearchParameters.getRefinedDisjunctiveFacets.js b/packages/algoliasearch-helper/test/spec/SearchParameters.getRefinedDisjunctiveFacets.js
index 8702504dbd..dd1eb0658f 100644
--- a/packages/algoliasearch-helper/test/spec/SearchParameters.getRefinedDisjunctiveFacets.js
+++ b/packages/algoliasearch-helper/test/spec/SearchParameters.getRefinedDisjunctiveFacets.js
@@ -1,5 +1,4 @@
 "use strict";
-
 var test = require( "tape" );
 //var _ = require( "lodash" );
 var SearchParameters = require( "../../src/SearchParameters" );
diff --git a/packages/algoliasearch-helper/test/spec/helper.clears.js b/packages/algoliasearch-helper/test/spec/helper.clears.js
index 707272451b..c00685d79a 100644
--- a/packages/algoliasearch-helper/test/spec/helper.clears.js
+++ b/packages/algoliasearch-helper/test/spec/helper.clears.js
@@ -1,5 +1,4 @@
 "use strict";
-
 var test = require( "tape" ),
     algoliasearchHelper = require( "../../index" ),
     isUndefined = require( "lodash/lang/isUndefined" );
@@ -25,7 +24,7 @@ var init = function init() {
 test( "Check that the state objects match how we test them", function( t ) {
   var helper = init();
 
-  t.deepEqual( helper.state.facetsRefinements, { "facet1" : "0", "facet2" : "0" } );
+  t.deepEqual( helper.state.facetsRefinements, { "facet1" : [ "0" ], "facet2" : [ "0" ] } );
   t.deepEqual( helper.state.disjunctiveFacetsRefinements, { "disjunctiveFacet1" : [ "0" ], "disjunctiveFacet2" : [ "0" ] } );
   t.deepEqual( helper.state.facetsExcludes, { "excluded1" : [ "0" ], "excluded2" : [ "0" ] } );
   t.deepEqual( helper.state.numericRefinements, { "numeric1" : { ">=" : "0", "<" : "10" }, "numeric2" : { ">=" : 0, "<" : 10 } } );
@@ -37,7 +36,7 @@ test( "Clear with a name should work on every type and not remove others than ta
   var helper = init();
 
   helper.clearRefinements( "facet1" );
-  t.deepEqual( helper.state.facetsRefinements, { "facet2" : "0" } );
+  t.deepEqual( helper.state.facetsRefinements, { "facet2" : [ "0" ] } );
 
   helper.clearRefinements( "disjunctiveFacet1" );
   t.deepEqual( helper.state.disjunctiveFacetsRefinements, { "disjunctiveFacet2" : [ "0" ] } );
@@ -57,7 +56,7 @@ test( "Clearing the same field from multiple elements should remove it everywher
 
   helper.addNumericRefinement( "facet1", ">=", "10" ).toggleExclude( "facet1", "value" );
 
-  t.equal( helper.state.facetsRefinements.facet1, "0" );
+  t.deepEqual( helper.state.facetsRefinements.facet1, [ "0" ] );
   t.deepEqual( helper.state.numericRefinements.facet1, { ">=" : "10" } );
   t.deepEqual( helper.state.facetsExcludes.facet1, [ "value" ] );
 
@@ -72,7 +71,7 @@ test( "Clearing the same field from multiple elements should remove it everywher
 test( "Clearing twice the same attribute should be not problem", function( t ) {
   var helper = init();
 
-  t.equal( helper.state.facetsRefinements.facet1, "0" );
+  t.deepEqual( helper.state.facetsRefinements.facet1, [ "0" ] );
   helper.clearRefinements( "facet1" );
   t.assert( isUndefined( helper.state.facetsRefinements.facet1 ) );
   t.doesNotThrow( function() {
diff --git a/packages/algoliasearch-helper/test/spec/helper.constructor.js b/packages/algoliasearch-helper/test/spec/helper.constructor.js
index c8b94ae258..73069eccbb 100644
--- a/packages/algoliasearch-helper/test/spec/helper.constructor.js
+++ b/packages/algoliasearch-helper/test/spec/helper.constructor.js
@@ -1,3 +1,4 @@
+"use strict";
 var test = require("tape");
 var _ = require( "lodash" );
 var sinon = require("sinon"); 
diff --git a/packages/algoliasearch-helper/test/spec/refinements.js b/packages/algoliasearch-helper/test/spec/refinements.js
index aaf845438f..f15288508a 100644
--- a/packages/algoliasearch-helper/test/spec/refinements.js
+++ b/packages/algoliasearch-helper/test/spec/refinements.js
@@ -29,10 +29,9 @@ test( "Adding refinments should add an entry to the refinments attribute", funct
   var facetValue = "42";
 
   t.ok( _.isEmpty( helper.state.facetsRefinements ), "should be empty at first" );
-  helper.addRefine( facetName, "42" );
-  t.ok( _.size( helper.state.facetsRefinements ) === 1 &&
-          helper.state.facetsRefinements.facet1 === facetValue,
-          "when adding a refinment, should have one" );
+  helper.addRefine( facetName, facetValue );
+  t.ok( _.size( helper.state.facetsRefinements ) === 1, "when adding a refinment, should have one" );
+  t.deepEqual( helper.state.facetsRefinements.facet1, [ facetValue ] );
   helper.addRefine( facetName, facetValue );
   t.ok( _.size( helper.state.facetsRefinements ) === 1, "when adding the same, should still be one" );
   helper.removeRefine( facetName, facetValue );
diff --git a/packages/algoliasearch-helper/test/spec/search.js b/packages/algoliasearch-helper/test/spec/search.js
index 6c65a5e83b..9231125ffd 100644
--- a/packages/algoliasearch-helper/test/spec/search.js
+++ b/packages/algoliasearch-helper/test/spec/search.js
@@ -1,5 +1,4 @@
 "use strict";
-
 var test = require("tape");
 var sinon = require("sinon");
 var algoliaSearch = require( "algoliasearch" );