U-Curl Lash Extensions | UJ UB UC UD Volume & Classic Mix Tray

U-Curl Lash Extensions — Volume & Classic | UJ UB UC UD Curl

Designed for professional lash artists who demand precision and consistency, our U-Curl lash extensions deliver a naturally lifted, open-eye effect that flatters every eye shape. Whether you're building featherweight volume fans or applying classic singles, these trays give you the control and performance your clients expect.

Why You'll Love It

• Effortless fan formation — ultra-fine 0.03mm and 0.05mm diameters bloom into perfect volume fans with minimal effort, saving you time on every set
• Consistent curl retention — UJ, UB, UC, and UD curls hold their shape through humidity, heat, and daily wear, keeping your client's look fresh between fills
• Versatile tray design — 8–15mm mix tray lets you map wispy, hybrid, or classic sets without switching trays mid-application
• Premium PBT fiber — cruelty-free, lightweight, and matte-finished for a seamless blend with natural lashes

Key Features

• Curl types: UJ (subtle everyday lift) / UB (moderate open-eye) / UC (strong doll-eye) / UD (maximum drama)
• Thickness options: 0.03mm, 0.05mm, 0.07mm (Volume) | 0.15mm (Classic)
• Length: 8–15mm mixed tray
• Fiber: high-grade PBT, cruelty-free
• Finish: matte black, natural-looking
• Adhesive compatibility: works with all professional cyanoacrylate lash adhesives
• Tray format: standard strip tray for easy isolation and pickup

Best For

• Lash artists building mega volume, Russian volume, or wet-look sets (0.03–0.07mm)
• Classic full-set applications requiring a natural-to-dramatic finish (0.15mm)
• Clients with monolid, almond, or downturned eye shapes who benefit from U-curl's open-eye lift
• Artists who prefer a single mixed tray for multi-length mapping

Specifications

Compare Options

How To Use

1. Prep — cleanse and prime your client's natural lashes; ensure complete oil removal for maximum adhesion
2. Isolate — use a microbrush or isolation tweezer to separate one natural lash at a time
3. Fan (Volume) — pick up 3–20 lashes from the strip using volume tweezers; bloom into a symmetrical fan before dipping
4. Dip — apply a micro-drop of cyanoacrylate adhesive to the base of the fan or single extension
5. Attach — place at the base of the isolated natural lash, 0.5–1mm from the skin
6. Cure — allow adhesive to cure fully; use a nano-mister or bonder to accelerate if needed
7. Map & repeat — follow your lash map for consistent curl and length distribution across the full set

Related Guides

• Lash Retention Guide — Why Extensions Fall Out & How to Fix It
• Humidity Guide for Lash Glue — How to Control Your Environment for Maximum Retention

FAQ

What is the difference between UJ, UB, UC, and UD curl?

UJ offers the most subtle lift for a soft, everyday open-eye look. UB adds moderate lift and is the most versatile U-curl. UC gives a strong doll-eye effect ideal for round and almond eyes. UD delivers maximum drama, best for clients with straight or downturned lashes who want bold curl visibility.

Can I use these for both volume and classic sets?

Yes. Choose 0.03–0.07mm for volume fans and 0.15mm for classic 1:1 application. All four U-curl options (UJ, UB, UC, UD) are available across thicknesses.

Are these lashes safe for sensitive clients?

Our PBT fiber is cruelty-free and latex-free. For clients with adhesive sensitivity, pair with a low-fume cyanoacrylate adhesive and use a bonder to seal and reduce off-gassing.

How many lashes are in each tray?

Each strip tray contains approximately 8–15mm mixed lengths across standard strip rows, providing enough lashes for a full set or multiple fills.

What adhesive works best with U-curl extensions?

Any professional cyanoacrylate lash adhesive is compatible. For high-humidity environments, choose a humidity-resistant formula with a 1–2 second dry time for optimal fan placement.

Shipping & Returns

Please note the following when returning purchased items. You may return unwanted items by mail within 60 days of receiving your order.

Liquid products are non-returnable and non-exchangeable.

We offer a 60-day return policy, meaning you can request a return within 60 days of receiving your item.

To be eligible for a return, your item must be in the same condition as when you received it—unworn or unused, with tags intact, and in its original packaging. You will also need to provide a receipt or proof of purchase.

To initiate a return, please contact us at info@swaniyalashes.com. If your return is approved, we will send you instructions on how and where to send your package. Unless the return is due to a product defect, the buyer is responsible for all return shipping costs. Items sent back to us without first requesting a return will not be accepted.

If you have any questions regarding returns, please feel free to contact us at info@swaniyalashes.com.

**Damages and Issues**
Please inspect your order upon receipt. If you discover that an item is defective or damaged, or if you received the wrong item, please contact us immediately so we can evaluate the issue and resolve it promptly.

**Exceptions / Non-returnable Items**
Certain types of items cannot be returned, such as perishable goods (e.g., food, flowers, or plants), custom products (e.g., special orders or personalized items), and personal care items (e.g., beauty products). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please contact us if you have questions about the eligibility of a specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

**Exchanges**
To get the item you want as quickly as possible, we recommend following the return process for your current item; once the return is approved, simply place a separate order for the new item you wish to purchase.

**Refunds**
Once we receive and inspect your return, we will notify you immediately regarding the approval status of your refund. If approved, the refund will be automatically processed to your original payment method. Please note that it may take some time for your bank or credit card company to process and post the refund; we appreciate your understanding. Additionally, no refunds will be issued for returns or the destruction of goods resulting from *force majeure* events (such as failure to cooperate with customs clearance, refusal to pay duties, refusal to collect the package at the designated pickup point, war, or natural disasters).

You may request a return and refund within 60 days of purchase. Return shipping costs are the responsibility of the buyer. Returned items must be unused, in their original condition upon receipt, and include all original packaging.

Please ensure return items are securely packaged to prevent damage during transit. We are not liable for any loss or damage to returned items occurring during shipping.

If you have any questions, please consult us before purchasing. If an item is defective, please contact us within 60 days of receipt. We will arrange a replacement immediately upon receiving the defective item.
If you are not satisfied with the item you received, please feel free to contact us; we are committed to resolving any issues you encounter!
Once an item has shipped, we are not responsible for any damage or loss that may occur to the package during transit.

To cancel an order, please notify us before the order ships. We will confirm the cancellation with you via email or online chat. Refund requests will be processed within seven business days. Depending on your bank's processing speed, it may take 10 to 15 business days for the refund amount to appear on your account statement.

If the order has already shipped, you will receive a shipping status notification; in this case, you must return the package to us before a refund can be requested.
We will process the refund immediately upon receiving the returned package.
No refunds will be issued if goods are destroyed by customs due to reasons attributable to the buyer (e.g., refusal to cooperate with customs clearance, incorrect address, inability to be contacted, etc.). If goods are forcibly returned by customs, the buyer is responsible for both the return shipping costs and the original shipping costs. The specific shipping amount depends on the rates charged by your chosen courier service.

If the item you received is damaged or if a shipping error occurred due to our fault, the consumer will not be responsible for the resulting return shipping costs.