How to compare two 50 ml Korean serums before buying online
A buyer checklist using two 50 ml serum listings as examples.
Two Korean skincare products can have the same listed size while differing in ingredients, directions and price. THE CAST lists LUMIPURA Hyal Shot Ampoule Essence 50 ml and smoothus Hydro Barrier Balancing Serum 50 ml. Use their individual product pages to compare the exact listings before buying.
Start with identity and size
Confirm the full product name, brand, stated volume and quantity. Similar words on the front of a package do not establish that two formulas are interchangeable. Check the full ingredient information and directions provided for each item, especially if you avoid particular ingredients.
Compare price and delivery
On 11 November 2026, THE CAST displayed product prices of KRW 40,000 for the LUMIPURA listing and KRW 26,600 for the smoothus listing. These are dated product prices, not delivered totals, and may change. Review current availability, destination eligibility, shipping charges and applicable import costs before paying.
Choose the listing that fits your needs
Check the retailer’s return terms and any product-specific precautions. The best choice depends on your preferences and the information on the current product pages; equal volume alone is not a basis for comparing performance.