How to Apply Dear Seamless Underlash Extensions with Mascara
By Ardell | Lashes, Nails, Brows & Duo Glue | Published: 2026-08-07
Category: How-to Guides
Learn how to apply Dear Seamless Underlash Extensions with mascara for a natural, wide-eyed look. Step-by-step guide, tips, and product recommendations.
Underlash extensions have taken the beauty world by storm, offering a subtle yet striking way to enhance your eyes. Unlike traditional top-lash extensions, underlash extensions are applied beneath your natural lashes, creating a wide-eyed, doll-like effect that’s perfect for any occasion. But what if you want to add an extra oomph with mascara? Many wonder if you can combine the two without ruining the adhesive or clumping your lashes. The answer is yes—with the right technique and products.
In this guide, we’ll walk you through how to apply Dear Seamless Underlash Extensions with mascara, ensuring a flawless, long-lasting look. We’ll cover everything from prepping your lashes to the final coat of mascara, plus tips to avoid common mistakes. Whether you’re a beginner or a pro, this tutorial will help you master the art of underlash + mascara.
What Are Dear Seamless Underlash Extensions?
Dear Seamless Underlash Extensions are a revolutionary product from Ardell that sits underneath your natural lashes, rather than on top. This placement makes them virtually undetectable, giving you a seamless, natural enhancement that’s perfect for everyday wear or special events. They’re designed to be lightweight and comfortable, so you’ll forget you’re wearing them.
Unlike traditional strip lashes, underlash extensions are applied in small clusters or individual sections, allowing for a more customized look. They’re ideal for those who want to add length and volume to their lower lash line without the heaviness of full strips. Plus, they work beautifully with mascara—if you know how to apply them correctly.
- Underlash extensions are placed under your natural lashes for a subtle, wide-eyed effect.
- They are lightweight and comfortable for all-day wear.
- Mascara can be used with underlash extensions, but proper application is key.
Why Combine Underlash Extensions with Mascara?
Mascara is a staple in most makeup routines, adding definition and volume to your lashes. When you combine it with underlash extensions, you can achieve a look that’s both natural and dramatic. Mascara helps blend your natural lashes with the extensions, creating a cohesive, seamless appearance. It also darkens the base of your lashes, making your eyes appear larger and more awake.
However, it’s essential to use the right type of mascara and apply it carefully. Waterproof mascara is a great choice because it’s less likely to smudge or flake, which can be a concern when wearing underlash extensions. Additionally, you’ll want to avoid mascaras that contain oils, as they can break down the adhesive bond.
- Mascara blends natural lashes with extensions for a seamless look.
- Choose a waterproof, oil-free mascara to protect the adhesive.
- Apply mascara gently to avoid disturbing the extensions.
Step-by-Step: How to Apply Underlash Extensions with Mascara
Before you begin, make sure your natural lashes are clean and free of any makeup or oils. This ensures the adhesive will bond properly. If you’re using an oil-based cleanser, be sure to wash your face with a gentle cleanser afterward to remove any residue.
Next, remove the underlash extensions from their tray. Using tweezers, gently pick up one section at a time. Apply a thin layer of DUO Underlash Bond & Seal Adhesive 10 Day Wear to the strip or directly to your lash line. Wait a few seconds for the adhesive to become tacky before placing it under your natural lashes, as close to the waterline as possible. Press gently and hold for a moment to secure.
Once all sections are applied, allow the adhesive to dry completely. This usually takes a minute or two. Then, apply your mascara. Start at the base of your lashes and wiggle the wand upward, being careful not to pull or tug on the extensions. You can apply one or two coats, depending on your desired intensity. For the best results, use a mascara that’s specifically designed for sensitive eyes or extensions.
- Clean your lashes and hands before application.
- Use tweezers for precise placement.
- Wait for the adhesive to become tacky before pressing.
- Apply mascara gently from the base to the tips.
Tips for Long-Lasting Wear and Easy Removal
To maximize the wear time of your underlash extensions with mascara, avoid touching or rubbing your eyes. Also, be mindful when removing makeup—use an oil-free remover and avoid rubbing the lash line. When you’re ready to remove the extensions, use a dedicated remover like DUO Underlash Bond Remover to gently dissolve the adhesive without pulling your natural lashes.

If you’re new to underlash extensions, consider practicing with a few sections before applying a full set. This will help you get comfortable with the placement and ensure you achieve the look you want. And remember, practice makes perfect—soon you’ll be able to apply them in minutes.
- Avoid oil-based products to maintain the adhesive bond.
- Use a gentle, oil-free makeup remover.
- Remove extensions with a specialized remover to protect your natural lashes.
Product Recommendations for Underlash + Mascara Looks
To get the best results, it’s essential to use high-quality products. Ardell offers a range of underlash extensions and adhesives that are perfect for this technique. For a natural, everyday look, try the Faux Mink Individuals, Medium, 60-Count. These individual lashes are perfect for customizing your underlash look and blend seamlessly with mascara.

If you prefer a ready-to-wear option, the Press On Overlash Natural 120 is a great choice. These pre-designed strips are easy to apply and work well with mascara. For the adhesive, the DUO Underlash Bond & Seal Adhesive 10 Day Wear is a must-have. It provides a strong, long-lasting hold that withstands mascara application.
- Faux Mink Individuals offer customizable, natural-looking underlash extensions.
- Press On Overlash Natural 120 is a convenient, ready-to-wear option.
- DUO Underlash Bond & Seal Adhesive ensures a secure hold.
Combining underlash extensions with mascara is a game-changer for achieving a beautiful, wide-eyed look. With the right products and techniques, you can enjoy the benefits of both without compromising on style or comfort. Whether you’re a beginner or a pro, we hope this guide helps you master the art of underlash + mascara. Ready to try it yourself? Explore our range of underlash extensions and adhesives to find your perfect match!



