What are 4D Lashes? Your Guide to Fuller, Fluffier Deluxe Volume

If you are ready to go beyond natural lashes and want something noticeably fuller, but still soft and wearable, you’ve probably come across the term 4D lashes. Most clients know they want “fuller” lashes, but they don’t always know the lash math behind the flutter.
So, what are 4D lashes, and are they right for you? At Posh Deluxe Salon, we specialise in 4D–6D Deluxe Volume, a technique designed to create a beautifully fluffy, customised lash look without compromising comfort or lash health.
What Are 4D Lashes?

4D lashes are a type of volume lash extension where four ultra-fine extensions are applied to one natural lash.
Instead of a single extension (like classic lashes), your lash artist creates a fan of four lightweight lashes and applies it to each natural lash.
The result?
- A fuller, fluffier appearance
- A darker, more defined lash line
- A soft, feathery finish, not heavy or clumpy
Understanding the “D”: What Does Dimension Mean?
The “D” in lash extensions stands for dimension, which refers to how many extensions are applied per single natural lash.
- 2D: 2 ultra-light extensions per lash.
- 3D: 3 ultra-light extensions per lash.
- 4D: 4 ultra-light extensions per lash.
- Up to 6D: 6 ultra-fine extensions per lash.
In a 4D set, your lash artist creates a handmade fan of four lightweight extensions and applies it to each natural lash. This creates a fuller appearance and a darker, more defined lash line with a soft, feathery finish that isn’t heavy or clumpy.
4D Lashes vs. 2D and 3D Lashes: Finding Your Perfect Match
Choosing the right dimension is the secret to a set that feels like you. If you have experimented with our lighter sets, here is how 4D fits into the spectrum of Posh Deluxe lash styles:
While 2D and 3D are favorites for office-to-evening wear, 4D lashes are ideal for clients who want more fullness than 3D can provide or those with sparse natural lashes needing extra coverage.
Introducing 4D–6D Deluxe Volume at Posh Deluxe Salon
At Posh Deluxe Salon, we don’t believe in a one-size-fits-all approach. Our 4D–6D Deluxe Volume sets are fully customised to suit your natural lash strength, eye shape, and desired level of fullness. This means your set may include a mix of 4D, 5D, or 6D fans to create the perfect balance of density and softness.
What Makes Our Deluxe Volume Different?
- Handmade Fans: We use handmade fans for a soft, airy texture rather than pre-made options.
- Ultra-Lightweight: We use ultra-fine diameters to ensure the set remains weightless and flexible.
- Clean, Narrow Bases: This technical precision ensures better retention and a seamless blend.
- Custom Mapping: Our owner, Paola, personally ensures that the style, length, and curl match your lifestyle and aesthetic goals.
The Experience: Comfort Meets Glamour
A common question is: Will 4D lashes feel heavy? Not at all, when applied correctly. It’s not about how many lashes are applied; it’s about proper weight distribution. At Posh Deluxe, your lash health is our priority.
Beyond the technical results, we provide a “spoiling experience” designed for total relaxation. Our Perth salon features:
- A clean, bright, and luxurious sanctuary.
- Ultra-comfy beds with knee cushions and soft pink fluffy blankets.
- The environment is so calm that many clients fall asleep during their Deluxe Volume service.
Who Are 4D Lashes Best For?
If you loved the idea of 2D and 3D lashes but want something with a little more impact, 4D lashes are perfect for:
- Events and Weddings: The go-to for a “red carpet” ready look.
- Vacations: Look “done” even when you’re coming out of the water.
- Efficiency: Perfect for clients who want to skip eye makeup entirely.
- Polished Appearance: Anyone who loves a dense, “wispy” look that mimics a delicate strip lash.
Ready for the Ultimate Glow-Up?
So, what are 4D lashes? They are the perfect step up if you are ready for more volume, more definition, and a soft, fluffy finish. Experience the difference of truly customised volume lashes in a space where you can relax and feel taken care of.
Book your 4D–6D Deluxe Volume appointment at Posh Deluxe Salon today and discover Perth’s best-kept beauty secret.




