Using Promo Codes when shopping at Trayvax is just a few steps: You need to log in to your existing account at trayvax.com or create a new account of your own; then, to select a product, you can browse the trayvax.com product page to select a product and add it to your cart. Occasionally, they will offer you discounted products up to 20%. Then, click Pay, select the corresponding available Coupons, and select your preferred payment method. Please note that each Trayvax Coupon Codes has its own rules of use, if your order is eligible for trayvax.com, it can be used.