Narrow YY Double Classic lash extensions

Narrow YY U shaped Double Classic lash extension

Double Classic lash extensions for lash artists

Double Classic U lash extensions application on model

Narrow YY Lashes

Name: Narrow YY Lashes - 0.07 / D / Mixed 8-15 mm
SKU: NA-0DMI-2566
Availability: InStock

$21.00

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Dark Matte Finish

U-Shaped Fan Design

Polished Hybrid & Wet Looks

Thickness

Curl

Length

What are the lashes made of?

All Mega Lash Academy lashes are made from the highest quality Korean PBT (Polybutylene Terephthalate). They are also referred to as faux mink or faux silk lashes.

The lashes are extremely soft and lightweight, while maintaining a long-lasting curl. And lashes made from PBT have the least chance of causing an allergic reaction to skin compared to all other eyelash extension materials on the market.

How to apply YY Lashes?

Use tweezers to pick the YY lash just before the base splits into the YY which you will see is about half way on the lash. By doing this, you will keep the extension intact, dip in adhesive, then apply as you would a classic extension.

Narrow YY Lashes™ | Double Classic & U Lash Extensions

Sharper curve. Denser lash line. Same effortless 1:1 application.

Looking for Double Classic lashes, U lashes, or a narrower alternative to traditional YY lashes? Meet MLA Narrow YY Lashes™, our compact U-shaped lash extensions designed to create a darker, denser lash line without the wide, fluffy spread of traditional YY lashes.

Sometimes referred to as Double Classic lashes or U lash extensions, this style combines the easy application of classic lashes with the added density of four ultra-fine fibers.

Each Narrow YY lash features four lightweight PBT fibers fused at the base and divided into two narrow sections, creating a compact U-shaped profile. Unlike traditional YY lashes, which spread outward for a fluffier finish, Narrow YY lashes stay tighter and more parallel for a clean, defined, almost classic-like appearance.

Apply them 1:1 to the natural lash just like classic extensions. No handmade fans. No pinching. No volume-fan technique required.

The result? A fuller, darker lash line with crisp direction and lightweight wear.

Why Lash Artists Love Narrow YY / Double Classic Lashes

Denser than traditional YY lashes: The narrow U-shaped design keeps the fibers closer together for a darker, more defined lash line.
Easy 1:1 application: Apply one Narrow YY extension to one natural lash using the same placement method as classic lashes.
Four lightweight fibers: Get extra coverage and dimension without creating the wide appearance of a traditional volume fan.
Fast, consistent sets: Create fuller-looking sets without hand-making volume fans.
Clean, structured finish: Perfect when your client wants more than a classic set but less fluff than traditional YY or volume lashes.
Soft matte PBT: Ultra-black, flexible fibers create a rich finish while remaining lightweight and comfortable.

Are Narrow YY Lashes the Same as Double Classic Lashes?

Narrow YY lashes belong to the same emerging lash style often described as Double Classic lashes or U lashes. Terminology can vary between lash brands, but these styles share a similar goal: creating a fuller, darker classic-style set using a pre-formed multi-fiber extension that can be applied 1:1.

At Mega Lash Academy, we call our version Narrow YY Lashes™ because the compact U-shaped construction resembles a traditional YY lash with a much narrower spread.

Instead of the fibers opening outward into the recognizable wide YY shape, they curve inward and remain closer together. This creates a cleaner, tighter lash line with more visible definition.

Narrow YY vs Traditional YY Lashes


Feature	YY Lashes	Narrow YY Lashes
Fan shape	Open V-shaped fan	Narrow U-shaped design
Fiber spread	Wider spread, airy volume	Tighter and more parallel
Lash line	Soft and textured	Darker and more defined
Application	1:1 classic placement	1:1 classic placement
Best for	Wispy or soft hybrid looks	Double classic, dense hybrid and defined sets
Vibe	Airy and light	Sleek and bold

What Sets Can You Create With Double Classic / Narrow YY Lashes?

Double Classic Set: Use Narrow YY lashes throughout the set for a fuller version of the traditional classic look. The compact shape adds coverage and definition while maintaining clean separation.

Dense Hybrid Set: Mix Narrow YY lashes with classic, flat, or volume lashes to build extra depth through the lash line without making the finished set overly fluffy.

Defined or Wet-Inspired Set: Use Narrow YY lashes throughout the set to create narrow vertical lines and a darker, more structured finish.

Soft Hybrid Set: Combine Narrow YY and traditional YY lashes. The regular YY lashes add airy texture while the Narrow YY lashes build density and definition.

Who Are Narrow YY Lashes Best For?

Narrow YY / Double Classic lashes are ideal for:

Lash artists who want classic-style application with a fuller result
Clients who want more density than traditional classic extensions
Artists looking for an alternative to wide, fluffy YY lashes
Clients with sparse natural lashes who need more visual coverage
Hybrid, defined and wet-inspired lash sets
Lash artists who want to create fullness without hand-making volume fans

Narrow YY, U Lash, Double Classic... What's the Difference?

You may see similar lash styles called Double Classic lashes, U lashes, U-shaped lashes, Narrow YY lashes, or Double YY lashes.

Because terminology varies between lash brands, the easiest way to compare them is by looking at the actual construction.

Traditional YY lashes open outward into a wider shape. MLA Narrow YY Lashes™ use a tighter U-shaped construction that keeps the fibers closer together, producing a darker, cleaner and more classic-like lash line.

Whatever name you have seen them under, if you're searching for an easy-to-apply lash that sits between traditional classic and YY/volume styling, MLA Narrow YY Lashes™ were designed for exactly that.

Shipping Information

🚚 Free U.S. shipping on orders $125+ (standard shipping, before taxes and fees, after discounts)

⏰ Order by 1:30 PM Arizona time, Monday through Friday, and it usually ships the same day. Orders placed after 1:30 PM, on weekends, or on holidays ship the next business day.

📦 Delivery times (after your order ships):

USPS Ground Advantage: 3-5 business days
USPS Priority Mail: 2-3 business days
UPS 2nd Day Air: 2 business days
UPS Next Day Air: 1 business day

UPS doesn’t deliver on weekends or holidays, or to P.O. Boxes.

⚠️ Delivery dates are estimates, not guarantees. Weather and carrier delays can slow things down, and we can’t refund shipping if the carrier is late.

🛡️ Checkout+ (by Re:do) covers lost, stolen, or damaged packages, plus free returns and exchanges. It’s added at checkout, and you can remove it. Without it, any claim goes to the carrier directly.

🌎 International orders may have customs fees, which the buyer pays.

Read our full Shipping Policy

Return & Exchange

↩️ 14-day returns. Request a return within 14 days of delivery, then ship it back within 10 days of approval.

✅ Items must be unused, undamaged, and in their original packaging, with all lash strips in place.

🚫 Final sale: liquids (adhesives, cleansers, primers, bonders, removers), sale items, personalized or engraved items, subscriptions, gift cards, and digital products.

📦 Damaged, defective, or wrong item? Email us within 7 days of delivery with photos and order number and we'll make it right.

💸 Refunds to your original payment have a 10% restocking fee. Exchanges and store credit have no fee.

Start a return · Read our full Refund Policy

Disclaimer

Our products are exclusively designed for professional use and should only be purchased by licensed estheticians or cosmetologists. Please check with your state licensing board to confirm requirements in your area. All products available on this website are intended for professionals only. Improper application can lead to harm. Only individuals with appropriate training, in line with local laws and regulations, should apply these products. Do not attempt to use these products if you have not been properly trained.