Dear Seamless Underlash Extensions: How to Apply Them Under Your Lashes
By Ardell | Lashes, Nails, Brows & Duo Glue | Published: 2026-08-07
Category: How-to Guides
Learn how to apply Dear Seamless Underlash Extensions under your lashes with this step-by-step tutorial, including tips for placement and adhesive.
Underlash extensions are the beauty industry's best-kept secret for adding subtle, natural-looking length and volume without the weight of traditional strip lashes. Unlike top lashes, which sit above your lash line, underlash extensions are applied beneath your natural lashes, creating a seamless, lifted effect that's perfect for everyday wear or special occasions. If you've been curious about trying this innovative technique, you're in the right place.
In this guide, we'll walk you through everything you need to know about applying Dear Seamless Underlash Extensions under your lashes. From prepping your natural lashes to positioning the strip and securing it with the right adhesive, we'll cover each step in detail so you can achieve a professional-looking result at home. Whether you're a lash newbie or a seasoned pro, this tutorial will help you master underlash placement with confidence.
What Are Underlash Extensions and Why Choose Them?
Underlash extensions are a unique type of lash that is designed to be worn underneath your natural lashes, rather than on top. This placement offers several benefits: it creates a more natural look because it mimics the way your lashes naturally grow, it adds definition without looking heavy, and it can make your eyes appear larger and more open. The 'Dear Seamless' style is particularly popular because it features a thin, flexible band that blends seamlessly with your lash line, making it nearly invisible.
Choosing underlash extensions over traditional strip lashes is a great option if you have straight lashes that tend to point downward, or if you want a subtle enhancement that doesn't overwhelm your eye shape. They are also ideal for those who wear glasses, as the lashes won't brush against the lenses. Plus, underlash extensions are reusable, making them a cost-effective addition to your beauty routine.
- Natural, seamless appearance
- Comfortable for all-day wear
- Reusable with proper care
Step-by-Step: How to Apply Underlash Extensions Under Your Lashes
Applying underlash extensions may seem tricky at first, but with a little practice, you'll get the hang of it. Start by ensuring your natural lashes are clean and free of any makeup or oil. Use a gentle cleanser to remove residue, then dry them thoroughly. This step is crucial for the adhesive to bond properly.
Next, carefully remove the Dear Seamless underlash from its tray using tweezers. Hold it by the band and trim it to fit your eye shape if necessary. You want the lash to sit slightly shorter than your natural lash line to avoid poking the inner or outer corners. Now, apply a thin, even layer of lash glue along the band. For best results, use a glue that dries clear and offers strong hold, like the Strong Hold Lash Glue, Clear, which ensures the lash stays put all day.

Wait about 30 seconds for the glue to become tacky. Then, using your tweezers, place the lash underneath your natural lashes, as close to the lash line as possible. Press gently to secure it, and hold for a few seconds. You can use a mirror to check the placement and adjust if needed. Once in place, gently press your natural lashes together with the underlash to blend them.
- Always start with clean, dry lashes.
- Trim the lash to fit your eye shape.
- Wait for the glue to become tacky before applying.
Tips for Perfect Underlash Placement
Getting the placement right is key to a natural look. The underlash should sit right at the base of your natural lashes, not too far back or too far forward. If you place it too far back, it may irritate your waterline; too far forward, and it won't blend well. Practice in front of a mirror with good lighting to find the sweet spot.
Another tip is to use a lash with a flexible band, like the Dear Seamless, which conforms to the curve of your eye. If you're new to underlash extensions, consider starting with a lash that has a lighter density, such as the Half Naked Lashes 435, 5-Pairs, which offers a natural look and is easier to handle. Once you're comfortable, you can experiment with more dramatic styles.

- Use a mirror with good lighting.
- Start with a lighter lash for practice.
- Press gently to avoid damaging the band.
Choosing the Right Adhesive for Underlash Extensions
The adhesive you use can make or break your underlash experience. Since the lash sits close to the waterline, you need a glue that is safe for sensitive eyes and provides a strong, long-lasting hold. The Strong Hold Lash Glue, Clear is an excellent choice because it dries invisible and bonds quickly, ensuring your underlash stays in place through tears, sweat, and long days.
If you have sensitive eyes, look for a formula that is latex-free and hypoallergenic. The DUO Rosewater & Biotin Striplash Adhesive, Dark is a great option, as it nourishes your lashes with biotin while providing a reliable hold. Remember to apply a thin layer to the band and avoid getting glue in your eyes. Always let the glue dry completely before removing the lash.
- Choose a glue that dries clear for a seamless look.
- Opt for latex-free formulas if you have sensitive eyes.
- Apply a thin, even layer to the band.
How to Remove Underlash Extensions Safely
Removing underlash extensions is just as important as applying them. Never pull or tug at the lash, as this can damage your natural lashes. Instead, use a gentle oil-based makeup remover or a dedicated lash glue remover. Soak a cotton pad with the remover and press it against your closed eye for a few seconds to dissolve the adhesive.
Once the glue loosens, gently slide the lash off from the outer corner. Clean the lash with a mild cleanser to remove any remaining glue, and store it in its original tray to maintain its shape. With proper care, your underlash extensions can be reused multiple times, making them a sustainable choice for your beauty routine.
- Use oil-based remover to dissolve glue.
- Never pull or tug at the lash.
- Clean and store the lash properly after removal.
Underlash extensions are a game-changer for anyone seeking a natural, seamless enhancement. With the right technique and products, you can achieve a beautiful, wide-eyed look that lasts all day. Ready to try underlash extensions for yourself? Explore our selection of Dear Seamless Underlash Extensions and find your perfect match today.



