diff --git a/src/utils/hashUtils.js b/src/utils/hashUtils.js
index a428066..47352fb 100644
--- a/src/utils/hashUtils.js
+++ b/src/utils/hashUtils.js
@@ -85,6 +85,14 @@ module.exports.hashIP= function(ip, salt){
     return `${salt}$${hash}`;
 }
 
+/**
+ * Site-wide IP hash comparison function
+ * 
+ * Allows us to identify new plaintext IP's against saved IP hashes
+ * @param {String} ip - IP to hash
+ * @param {String} salt - (optional) string to salt IP with, leave empty to default to a securely generated string encoded in base64
+ * @returns {Boolean} Whether or not the IP matched the hash
+ */
 module.exports.compareIPHash = function(ip, hash){
     //Split hash by salt delimiter
     const splitHash = hash.split("$");