Table of Contents Introduction What is an Essence? What is a Serum? What is an Ampoule? Which One Should You Use? How to Layer Them Properly Frequently Asked Questions (Q&A) Related Links (For Further Reading) Recommended Links 1. Introduction In multi-step skincare routines, especially in K-beauty, terms like serum, ampoule, and essence often come up. Though they seem similar, each product type has its own role, texture, and purpose. This guide breaks down the differences and helps you decide what’s best for your skin needs. 2. What is an Essence? An essence is a lightweight, water-based product applied after toner. It hydrates the skin and prepares it for the absorption of heavier treatment products like serums or ampoules. Essences often contain fermented ingredients, hyaluronic acid, or botanical extracts. They're especially beneficial f...