Several ways exist to get a discount at biotherm.ca. One can look for special offers on the website, which often include free gifts with purchase and free shipping for orders over $49. There's also an exclusive offer of a 20% discount for Mastercard card holders. Another way to get a discount is by using a promo code. For instance, the code 'CLARISONIC' can save 15% on a purchase. Additionally, first-time customers can get a 15% discount on their first order when they sign up for the Biotherm email newsletter. There are also other coupon codes available, such as 'FIRSTORDER', which provides a 15% discount.