ONYXBOX Coupon: Free Black Owned Beauty Box With Subscription! Posted by Hello Subscription on February 25, 2018. Subscription Box Coupons & Deals / ONYXBOX Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification ONYXBOX has released a new deal – get a FREE Black Owned Beauty box, curated with products from black female led companies when you use coupon code BLACKOWNEDBOGO5. Visit ONYXBOX to subscribe or find out more!