Product introduction: Cassia seed is a legume in the genus Senna, sometimes separated in the monotypic genus Diallobus. It grows wild in North, Central, and South America, Asia, Africa, and Oceania. It is believed to possess a laxative effect, as well as to be beneficial for the eyes Function: 1. Cleaning heat & improving eyesight. 2. Improve eyes pain, photophobia and tear, not seeing clearly. 3. Improve headache and dizziness. 4. Improve constipation and Laxative. Application: 1. Applied in pharmaceutical field; 2. Applied in health product field; Shipping Options as follows EMS Around 7-10 working days DHL Around 3-5 working days Fedex Around 4-6 working days TNT Around 6-7 working days By Air : Around 5-7 working days By Sea : Around 15-30 working days Perfect After-Sales Service: 1. Product Pictures Showing 2. Shipment Tracking Number 3. Promptly Following Tracking Status 4. Delivery Notice 5. Product Quality Following 6. Product Feedback 7. Follow-up Improvement Suggestion