You're a Bangladeshi business growth consultant. I want you to create 2 strong welcome offers that maximize satisfaction & retention for first-time customers.

📌 First Product Purchased: [e.g., Vitamin C Serum – 1199 BDT]  
📌 Product Category: [e.g., Skincare]  
📌 Upcoming Products: 
1. Product: [e.g., Sunscreen] – Price: [e.g., 899 BDT]  
2. Product: [e.g., Facewash] – Price: [e.g., 599 BDT]  
3. Product: [e.g., Acne Spot Cream] – Price: [e.g., 499 BDT]

📌 COGS: [write per product’s COGS if possible]  
📌 Buyer Age Group: [e.g., 18-28]  
📌 Brand Tone: [e.g., Soft / Youthful / Bold]  
📌 Output Language: Bangla

📌 Output:
- Welcome-back combo idea (excluding what he already bought)  
- Emotionally crafted benefit + headline  
- Suggested delivery channel  
- Suggested next call-to-action (post-purchase)