The Science Behind Lash Curls: What You Need to Know

When you shop for lash extensions, you’ll notice terms like B, C, or D curl. But what do they actually mean? Choosing the right curl can make the difference between a subtle enhancement and a dramatic transformation.

What Are Lash Curls?

Lash curls describe the curvature of the lash fiber. The curl determines how open, lifted, or natural your eyes will appear.

The Main Lash Curl Types:

• B Curl – The most natural curl, great for beginners or clients who want subtle definition.
• C Curl – A popular option that mimics the look of naturally curled lashes. Ideal for most eye shapes.
• D Curl – Dramatic and bold, perfect for special occasions or when you want your eyes to stand out.

How Lash Curls Are Made

Synthetic lash fibers are heat-processed to create a stable curl that lasts throughout wear. High-quality lashes maintain their curl even after exposure to humidity.

Choosing Your Curl
If you’re unsure, start with C curl—it’s universally flattering. Then experiment with D curl for drama or mix different curls for a custom look.