If you've ever stared at a wall of lash trays wondering what "80D" or "100D+200D" actually means, you're not alone. Choosing the right density is the difference between a clean classic set and a fluffy mega-volume look. Here's the simple breakdown.
Classic lashes
Classic sets apply one extension to one natural lash. They're best for clients who want a natural, mascara-like finish. You don't need volume trays for true classic work, but lighter densities like 80D are great when you want a soft, low-drama result.
Volume lashes
Volume sets use handmade or pre-made fans (multiple thin extensions per natural lash). This is where density trays shine. For everyday volume sets, reach for 100D–180D trays — enough fibers to build full, fluffy fans without overwhelming the natural lash.
Mega volume lashes
Mega volume means large, dense fans (often 10–16+ extensions per fan) for a dramatic, dark lash line. You'll want high-density trays — 240D and mixed rows like 100D+200D+300D — so you can build big fans quickly without running out of fibers mid-set.
Quick reference
- Soft / classic-adjacent: 80D, 100D
- Everyday volume: 150D, 180D
- Mega volume: 240D, 100D+200D, 100D+200D+300D
Mixed-length trays (like 100D+200D) save you time because each strip already blends two densities — perfect for mapping shorter inner corners and longer outer fans from one tray.
Which should you stock?
Most lash artists keep a range: lighter trays for natural clients and higher densities for glam and bridal. If you're just starting out, a 150D and a 240D will cover the majority of requests.