Birchbox Coupon: Get Your First Box 50% Off! Last updated by Hello Subscription on August 22, 2019. Subscription Box Coupons & Deals / Birchbox Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Birchbox has a new, major deal! Use this link to save 50% off your first month of a Birchbox subscription! Plus, subscribe for 6 months and get a FREE tarte Rainforest of the Sea gloss in Getaway!