https://www.123articleonline.com/rss/author/263111/marc-gilbertArticles written by Marc Gilbert from 123ArticleOnline.comen-usCopyright (c) 123ArticleOnline.com All rights reserved. https://www.123articleonline.com/articles/1168261/smile-makeover-with-the-help-of-an-expert Then they apply whitening product on your teeth using a custom-made special tray which fits perfectly onto your teeth. Active ingredient in that product make it clean and help to restore its natural colour.