YY lashes are pre-shaped eyelash extensions with a joined base that separates into multiple fine tips. They are applied similarly to classic extensions, with one suitable lash unit attached to one isolated natural lash, but their branched structure creates more visible fullness than a single classic fiber.

They are especially useful for:

• Filling sparse areas in the lash line
• Creating light volume with classic-style placement
• Adding texture to hybrid sets
• Reducing the time required to make handmade fans
• Producing a soft, full and wearable finish

YY lashes sit between classic lashes and traditional volume fans. They provide more coverage than a standard classic extension while maintaining a lighter, more open appearance than many dense volume styles.

They can be picked up and placed using a technique similar to classic application, with one suitable pre-shaped unit attached to one isolated natural lash. Professional isolation, weight selection and adhesive control are still required.

They can be faster because the branched structure is already formed. However, artists still need training to control pickup, direction, adhesive and attachment.

Choose 0.05mm for a lighter, airier result and 0.07mm for more visible definition. Always consider the complete weight of the lash unit rather than thickness alone.

Their branched structure can visually fill gaps and create a more balanced lash line. The natural lashes must still be healthy enough to support the selected extensions.

U-Shape YY lashes, sometimes called UY lashes, are a variation of the traditional YY structure. Their curved base is designed to sit around the natural lash and provide a broad attachment area when positioned correctly.

LymeeBeauty U-Shape YY Lashes are available in:

• C and D curls
• 0.07mm thickness
• Mixed 8–15mm lengths
• Matte-black PBT fibers

They are a practical choice for soft volume, classic-volume and gap-filling sets. Correct placement and adhesive control are still essential; the base design does not guarantee retention on its own.

No lash structure can guarantee retention. Results also depend on preparation, adhesive performance, room conditions, attachment and aftercare.

3D provides the lightest W-Shape effect. 4D offers balanced fullness, while 5D and 8D create progressively darker results.

Yes. W-Shape lashes can be combined with classic lashes, cashmere lashes, YY lashes or narrower volume fans to create customized hybrid designs.

No. Their higher density requires careful assessment. Artists should consider natural-lash strength, extension length and total weight before application.

Dark brown fibers create softer contrast while still defining the lash line. They are suitable for natural, warm-toned and understated lash designs.

Yes. Mixing black and dark brown can create a softer multidimensional result. Brown may be concentrated through the inner section or blended throughout the entire set.

W-Shape lashes are pre-arranged multi-fiber extensions that create a wider, textured effect from one pickup. Their separated tips add density across the lash line while the shared base allows them to be applied using a familiar one-unit placement technique.

LymeeBeauty W-Shape Lashes are available in 3D, 4D, 5D and 8D densities. As the density increases, each unit creates a fuller and darker effect.

W-Shape lashes are commonly used for:

• Natural volume sets
• Hybrid lash extensions
• Textured volume
• Gap filling
• Darker lash lines
• Faster salon appointments

YY lashes create a softer, more open texture. W-Shape lashes spread multiple fibers across a wider area and are available in several densities for stronger fullness.

Choose YY Lashes for Soft, Wearable Fullness

YY lashes are ideal when a client wants more texture than classic extensions but does not want a traditional volume set. Their open, branched tips help fill spaces while maintaining a soft finish.

Choose 0.05mm YY lashes for lighter, airier styling. Choose 0.07mm YY lashes when more definition is required and the client’s natural lashes can safely support the selected structure.

Choose Dark Brown YY Lashes for Soft Glam

Dark brown YY lashes provide definition without the intensity of solid black. They are particularly effective for clients requesting warm, natural or understated lash sets.

They can also be mixed with black lashes to soften the inner corner, create subtle highlights or produce a multidimensional brown-black hybrid.

Choose U-Shape YY Lashes for Gap Filling

The U-shaped base provides an alternative attachment profile that can help artists work around sparse areas and create a more balanced lash line. These lashes are useful for clients who want light volume without a dense fan effect.

Choose 3D or 4D W-Shape Lashes for Natural Volume

3D W-Shape lashes create the softest result in the W-Shape range. They are suitable for natural volume and lightweight hybrid designs.

4D W-Shape lashes add slightly more density while remaining versatile enough for everyday salon sets.

Choose 5D or 8D W-Shape Lashes for More Definition

5D W-Shape lashes create a darker, fuller lash line without requiring handmade volume fans.

8D W-Shape lashes produce the strongest density in this collection. Because higher-density units contain more fibers, artists must carefully assess the natural lash before application. They should not be selected solely because the client wants the darkest possible result.

In this collection, the number identifies the density of the W-Shape unit. Higher numbers create more fullness and a darker lash line, but also require careful natural-lash assessment.

0.05mm YY Lashes

The finer 0.05mm option creates a softer and airier appearance. It is suitable for light hybrid sets, delicate texture and clients who prefer less visual weight.

0.07mm YY Lashes

The 0.07mm option creates more definition and a darker result. It can be used for classic-volume, hybrid and gap-filling designs when appropriate for the natural lashes.

Thickness is only one part of weight selection. The artist must also consider the number of fibers, extension length and condition of the natural lash.

C Curl

C curl produces a moderate lift and a softer transition from many natural lash directions. It works well for natural volume, classic-volume and wearable hybrid sets.

D Curl

D curl creates a stronger upward effect and makes the lash design more visible from the front. It is suitable for clients requesting a more lifted or dramatic finish.

Curl should be selected according to the client’s natural lash direction, eyelid shape and desired result. D curl is not automatically better simply because it appears more lifted.

Mixed-Length Trays

Mixed 8–15mm trays provide several lengths in one box, making them useful for testing a new lash structure, building multiple maps or managing lower-volume appointments.

Single-Length Trays

Single-length trays are better for frequently used sizes. Busy artists can restock their most popular lengths without purchasing extra rows they may not need.

LymeeBeauty W-Shape and standard YY ranges include single-length and mixed-length options, while the Dark Brown YY and U-Shape YY products are offered in mixed 8–15mm trays.

Choose mixed trays when testing the range or creating several maps. Choose single-length trays when restocking the sizes used most frequently in your salon.

They shed with the client’s natural lash cycle. Actual retention varies according to application, natural-lash growth, adhesive conditions and aftercare, so a fixed wear time cannot be guaranteed.

No. These are professional eyelash extensions and must be applied by a trained lash technician. They are not DIY clusters or temporary strip lashes.

YY lashes and promade fans both help reduce the time required to create handmade volume, but their structures produce different results.

YY lashes have separated, branched tips that create an open and textured finish. They are often applied with a technique similar to classic lashes.

Promade fans usually have a more traditional fan shape and are available in different densities. They create more uniform volume and are often selected for evenly filled volume sets.

Choose YY or W-Shape lashes for visible texture and easy gap filling. Choose promade fans when the goal is a more symmetrical, traditional volume appearance.

1. Assess the Natural Lashes

Check the strength, density and direction of the client’s natural lashes. Select a structure that can be safely supported throughout the wear cycle.

2. Choose the Correct Lash Map

Plan the lengths before beginning the application. Adjust the map to the client rather than using the same length pattern on every eye shape.

3. Pick Up the Lash from the Base

Use precision tweezers to grip the shared base without crushing, separating or twisting the pre-shaped structure.

4. Control the Adhesive

Dip only the required portion of the base into professional eyelash extension adhesive. Too much adhesive can create bulky bonds, while too little may reduce the available attachment area.

5. Attach to One Isolated Natural Lash

Place the extension on a suitable isolated natural lash using the attachment direction taught in professional training. Ensure the base sits flush without lifting.

6. Check Direction and Symmetry

Multi-tip lashes create visible texture, so inconsistent direction can make the finished set look uneven. Check both eyes throughout the appointment.

7. Perform a Final Isolation Check

Separate any stickies and inspect the bases before completing the treatment.

Retention depends on the entire application system rather than the lash structure alone.

For consistent results:

• Clean the natural lashes thoroughly before application
• Match adhesive speed to the artist’s working speed
• Monitor room humidity and temperature
• Use an appropriate amount of adhesive
• Make sure the base is securely attached
• Avoid lifted or twisted roots
• Isolate every natural lash correctly
• Give clients clear cleansing and aftercare instructions

A wider or specially shaped base may provide additional attachment options, but it cannot compensate for unsuitable adhesive, poor preparation or incorrect placement.