Buying K-beauty online: how to compare serum bottle sizes
A first-party shopping guide about comparing serum bottle sizes.
THE CAST offers a place to browse K-beauty online. When comparing serum bottle sizes, use the details for the exact product and option you intend to order.
Review the product information
Compare the stated volume, ingredient information and directions for the specific serum option.
Compare the selected option
A larger bottle is not automatically a better match; compare equivalent volumes and check storage instructions where provided.
Check the complete order
Before paying, review availability, delivery eligibility, shipping charges, possible taxes or duties, and return conditions for your destination. Ask the seller if essential product details are unclear.