diff --git a/index.js b/index.js
index f9e7045..f8656a4 100644
--- a/index.js
+++ b/index.js
@@ -1,34 +1,26 @@
 'use strict';
 
 const { log, colors: { green }, PluginError } = require('gulp-util');
-const header = require('gulp-header');
+const Stream = require('readable-stream');
+const StreamQueue = require('streamqueue');
 const parse = require('parse-sass-value');
 const pkg = require('./package.json');
 
-/**
- * @typedef Options
- * @type {Object}
- * @property {boolean} verbose
- * @property {('single'|'double')} quotes
- * @property {('comma'|'space')} separator
- */
-
-/**
- * Default plugin options.
- * @type {Options}
- */
 const defaultOptions = {
   verbose: true,
   quotes: 'single',
   separator: 'comma'
 };
 
-/**
- * Parse object properties as SASS variables and inject them on streams.
- * @param {Object} variables
- * @param {Options} options
- * @returns {Stream}
- */
+function getStreamFromBuffer(string) {
+  const stream = new Stream.Readable();
+  stream._read = function() {
+    stream.push(new Buffer(string));
+    stream._read = stream.push.bind(stream, null);
+  };
+  return stream;
+}
+
 module.exports = (variables, options) => {
   options = Object.assign({}, defaultOptions, options);
 
@@ -53,5 +45,23 @@ module.exports = (variables, options) => {
       + `\t${statements.join('\n\t')}`);
   }
 
-  return header(statements.join('\n'));
+  const stream = new Stream.Transform({objectMode: true});
+
+  stream._transform = function(file, enc, cb) {
+    if(file.isNull()) {
+      return cb(null, file);
+    }
+
+    const prependedBuffer = new Buffer(statements.join('\n'));
+    if(file.isStream()) {
+      file.contents = new StreamQueue( getStreamFromBuffer(prependedBuffer), file.contents);
+      return cb(null, file);
+    }
+
+    file.contents = Buffer.concat([prependedBuffer, file.contents],
+      prependedBuffer.length + file.contents.length);
+    cb(null, file);
+  };
+
+  return stream;
 };
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..e521a54
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,343 @@
+{
+  "name": "gulp-sass-vars",
+  "version": "1.1.1",
+  "lockfileVersion": 1,
+  "dependencies": {
+    "ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
+    },
+    "ansi-styles": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4="
+    },
+    "array-differ": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/array-differ/-/array-differ-1.0.0.tgz",
+      "integrity": "sha1-7/UuN1gknTO+QCuLuOVkuytdQDE="
+    },
+    "array-uniq": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/array-uniq/-/array-uniq-1.0.3.tgz",
+      "integrity": "sha1-r2rId6Jcx/dOBYiUdThY39sk/bY="
+    },
+    "beeper": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/beeper/-/beeper-1.1.1.tgz",
+      "integrity": "sha1-5tXqjF2tABMEpwsiY4RH9pyy+Ak="
+    },
+    "chalk": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+      "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg="
+    },
+    "clone": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/clone/-/clone-1.0.2.tgz",
+      "integrity": "sha1-Jgt6meux7f4kdTgXX3gyQ8sZ0Uk="
+    },
+    "clone-stats": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/clone-stats/-/clone-stats-0.0.1.tgz",
+      "integrity": "sha1-uI+UqCzzi4eR1YBG6kAprYjKmdE="
+    },
+    "core-util-is": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
+    },
+    "css-color-names": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/css-color-names/-/css-color-names-0.0.1.tgz",
+      "integrity": "sha1-XQVI+iVkVu3kqaDCrHqxnT6xrYE="
+    },
+    "dateformat": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/dateformat/-/dateformat-2.0.0.tgz",
+      "integrity": "sha1-J0Pjq7XD/CRi5SfcpEXgTp9N7hc="
+    },
+    "duplexer2": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/duplexer2/-/duplexer2-0.0.2.tgz",
+      "integrity": "sha1-xhTc9n4vsUmVqRcR5aYX6KYKMds=",
+      "dependencies": {
+        "readable-stream": {
+          "version": "1.1.14",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+          "integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk="
+        }
+      }
+    },
+    "escape-string-regexp": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
+    },
+    "fancy-log": {
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/fancy-log/-/fancy-log-1.3.0.tgz",
+      "integrity": "sha1-Rb4X0Cu5kX1gzP/UmVyZnmyMmUg="
+    },
+    "glogg": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/glogg/-/glogg-1.0.0.tgz",
+      "integrity": "sha1-f+DxmfV6yQbPUS/urY+Q7kooT8U="
+    },
+    "gulp-util": {
+      "version": "3.0.8",
+      "resolved": "https://registry.npmjs.org/gulp-util/-/gulp-util-3.0.8.tgz",
+      "integrity": "sha1-AFTh50RQLifATBh8PsxQXdVLu08=",
+      "dependencies": {
+        "object-assign": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-3.0.0.tgz",
+          "integrity": "sha1-m+3VygiXlJvKR+f/QIBi1Un1h/I="
+        }
+      }
+    },
+    "gulplog": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/gulplog/-/gulplog-1.0.0.tgz",
+      "integrity": "sha1-4oxNRdBey77YGDY86PnFkmIp/+U="
+    },
+    "has-ansi": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/has-ansi/-/has-ansi-2.0.0.tgz",
+      "integrity": "sha1-NPUEnOHs3ysGSa8+8k5F7TVBbZE="
+    },
+    "has-gulplog": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/has-gulplog/-/has-gulplog-0.1.0.tgz",
+      "integrity": "sha1-ZBTIKRNpfaUVkDl9r7EvIpZ4Ec4="
+    },
+    "hex-color-regex": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/hex-color-regex/-/hex-color-regex-1.1.0.tgz",
+      "integrity": "sha512-l9sfDFsuqtOqKDsQdqrMRk0U85RZc0RtOR9yPI7mRVOa4FsR/BVnZ0shmQRM96Ji99kYZP/7hn1cedc1+ApsTQ=="
+    },
+    "hsl-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/hsl-regex/-/hsl-regex-1.0.0.tgz",
+      "integrity": "sha1-1JMwx4ntgZ4nakwNJy3/owsY/m4="
+    },
+    "hsla-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/hsla-regex/-/hsla-regex-1.0.0.tgz",
+      "integrity": "sha1-wc56MWjIxmFAM6S194d/OyJfnDg="
+    },
+    "inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
+    },
+    "is-color": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/is-color/-/is-color-0.2.0.tgz",
+      "integrity": "sha1-nUDGmXEH+I38XKAnYsxRs66AOdM="
+    },
+    "is-css-length": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/is-css-length/-/is-css-length-0.1.0.tgz",
+      "integrity": "sha1-NBVvguiLCYZfQOcAl0gULc5nTIA="
+    },
+    "isarray": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
+      "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8="
+    },
+    "isstream": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/isstream/-/isstream-0.1.2.tgz",
+      "integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo="
+    },
+    "lodash._basecopy": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/lodash._basecopy/-/lodash._basecopy-3.0.1.tgz",
+      "integrity": "sha1-jaDmqHbPNEwK2KVIghEd08XHyjY="
+    },
+    "lodash._basetostring": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/lodash._basetostring/-/lodash._basetostring-3.0.1.tgz",
+      "integrity": "sha1-0YYdh3+CSlL2aYMtyvPuFVZqB9U="
+    },
+    "lodash._basevalues": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/lodash._basevalues/-/lodash._basevalues-3.0.0.tgz",
+      "integrity": "sha1-W3dXYoAr3j0yl1A+JjAIIP32Ybc="
+    },
+    "lodash._getnative": {
+      "version": "3.9.1",
+      "resolved": "https://registry.npmjs.org/lodash._getnative/-/lodash._getnative-3.9.1.tgz",
+      "integrity": "sha1-VwvH3t5G1hzc3mh9ZdPuy6o6r/U="
+    },
+    "lodash._isiterateecall": {
+      "version": "3.0.9",
+      "resolved": "https://registry.npmjs.org/lodash._isiterateecall/-/lodash._isiterateecall-3.0.9.tgz",
+      "integrity": "sha1-UgOte6Ql+uhCRg5pbbnPPmqsBXw="
+    },
+    "lodash._reescape": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/lodash._reescape/-/lodash._reescape-3.0.0.tgz",
+      "integrity": "sha1-Kx1vXf4HyKNVdT5fJ/rH8c3hYWo="
+    },
+    "lodash._reevaluate": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/lodash._reevaluate/-/lodash._reevaluate-3.0.0.tgz",
+      "integrity": "sha1-WLx0xAZklTrgsSTYBpltrKQx4u0="
+    },
+    "lodash._reinterpolate": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/lodash._reinterpolate/-/lodash._reinterpolate-3.0.0.tgz",
+      "integrity": "sha1-DM8tiRZq8Ds2Y8eWU4t1rG4RTZ0="
+    },
+    "lodash._root": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/lodash._root/-/lodash._root-3.0.1.tgz",
+      "integrity": "sha1-+6HEUkwZ7ppfgTa0YJ8BfPTe1pI="
+    },
+    "lodash.escape": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/lodash.escape/-/lodash.escape-3.2.0.tgz",
+      "integrity": "sha1-mV7g3BjBtIzJLv+ucaEKq1tIdpg="
+    },
+    "lodash.isarguments": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/lodash.isarguments/-/lodash.isarguments-3.1.0.tgz",
+      "integrity": "sha1-L1c9hcaiQon/AGY7SRwdM4/zRYo="
+    },
+    "lodash.isarray": {
+      "version": "3.0.4",
+      "resolved": "https://registry.npmjs.org/lodash.isarray/-/lodash.isarray-3.0.4.tgz",
+      "integrity": "sha1-eeTriMNqgSKvhvhEqpvNhRtfu1U="
+    },
+    "lodash.keys": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/lodash.keys/-/lodash.keys-3.1.2.tgz",
+      "integrity": "sha1-TbwEcrFWvlCgsoaFXRvQsMZWCYo="
+    },
+    "lodash.restparam": {
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/lodash.restparam/-/lodash.restparam-3.6.1.tgz",
+      "integrity": "sha1-k2pOMJ7zMKdkXtQUWYbIWuWyCAU="
+    },
+    "lodash.template": {
+      "version": "3.6.2",
+      "resolved": "https://registry.npmjs.org/lodash.template/-/lodash.template-3.6.2.tgz",
+      "integrity": "sha1-+M3sxhaaJVvpCYrosMU9N4kx0U8="
+    },
+    "lodash.templatesettings": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/lodash.templatesettings/-/lodash.templatesettings-3.1.1.tgz",
+      "integrity": "sha1-+zB4RHU7Zrnxr6VOJix0UwfbqOU="
+    },
+    "minimist": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
+    },
+    "multipipe": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/multipipe/-/multipipe-0.1.2.tgz",
+      "integrity": "sha1-Ko8t33Du1WTf8tV/HhoTfZ8FB4s="
+    },
+    "parse-sass-value": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/parse-sass-value/-/parse-sass-value-1.1.2.tgz",
+      "integrity": "sha512-90uyiKE+bRott+hu5EG087/t2qAP4pgMUaMF5Yl6Q3Pn1UsReJBsekVQ5htNv7rCXMp8B1QtNKo8uxCu4Ekhbw=="
+    },
+    "process-nextick-args": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/process-nextick-args/-/process-nextick-args-1.0.7.tgz",
+      "integrity": "sha1-FQ4gt1ZZCtP5EJPyWk8q2L/zC6M="
+    },
+    "readable-stream": {
+      "version": "2.2.11",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.2.11.tgz",
+      "integrity": "sha512-h+8+r3MKEhkiVrwdKL8aWs1oc1VvBu33ueshOvS26RsZQ3Amhx/oO3TKe4lApSV9ueY6as8EAh7mtuFjdlhg9Q==",
+      "dependencies": {
+        "isarray": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/isarray/-/isarray-1.0.0.tgz",
+          "integrity": "sha1-u5NdSFgsuhaMBoNJV6VKPgcSTxE="
+        },
+        "string_decoder": {
+          "version": "1.0.2",
+          "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.2.tgz",
+          "integrity": "sha1-sp4fThEl+pehA4K4pTNze3SR4Xk="
+        }
+      }
+    },
+    "replace-ext": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/replace-ext/-/replace-ext-0.0.1.tgz",
+      "integrity": "sha1-KbvZIHinOfC8zitO5B6DeVNSKSQ="
+    },
+    "rgb-regex": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/rgb-regex/-/rgb-regex-1.0.1.tgz",
+      "integrity": "sha1-wODWiC3w4jviVKR16O3UGRX+rrE="
+    },
+    "rgba-regex": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/rgba-regex/-/rgba-regex-1.0.0.tgz",
+      "integrity": "sha1-QzdOLiyglosO8VI0YLfXMP8i7rM="
+    },
+    "safe-buffer": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.0.1.tgz",
+      "integrity": "sha1-0mPKVGls2KMGtcplUekt5XkY++c="
+    },
+    "sparkles": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/sparkles/-/sparkles-1.0.0.tgz",
+      "integrity": "sha1-Gsu/tZJDbRC76PeFt8xvgoFQEsM="
+    },
+    "streamqueue": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/streamqueue/-/streamqueue-1.1.1.tgz",
+      "integrity": "sha1-0612aGvpJLv5yix0qBSiGCR11tc="
+    },
+    "string_decoder": {
+      "version": "0.10.31",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+      "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
+    },
+    "strip-ansi": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8="
+    },
+    "supports-color": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+      "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc="
+    },
+    "through2": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.3.tgz",
+      "integrity": "sha1-AARWmzfHx0ujnEPzzteNGtlBQL4="
+    },
+    "time-stamp": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/time-stamp/-/time-stamp-1.1.0.tgz",
+      "integrity": "sha1-dkpaEa9QVhkhsTPztE5hhofg9cM="
+    },
+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
+    },
+    "vinyl": {
+      "version": "0.5.3",
+      "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-0.5.3.tgz",
+      "integrity": "sha1-sEVbOPxeDPMNQyUTLkYZcMIJHN4="
+    },
+    "xtend": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
+    }
+  }
+}
diff --git a/package.json b/package.json
index fb2b45e..195048a 100644
--- a/package.json
+++ b/package.json
@@ -8,9 +8,10 @@
     "name": "Giovanni Bruno"
   },
   "dependencies": {
-    "gulp-header": "^1.8.8",
-    "gulp-util": "^3.0.7",
-    "parse-sass-value": "^1.0.0"
+    "gulp-util": "^3.0.8",
+    "parse-sass-value": "^1.1.2",
+    "readable-stream": "^2.2.11",
+    "streamqueue": "^1.1.1"
   },
   "keywords": [
     "gulp",