You've seen the term everywhere. Bond and seal. It comes up in lash tutorials, on product pages, in your TikTok comments. But nobody ever stops to explain what it actually is, what it does, or whether you actually need it.
Here's the full breakdown.
What Is Bond and Seal for Lashes?
Bond and seal is a two-step adhesive system used to apply and secure individual or segment lashes. The bond is the adhesive that sticks the lash to your natural lash or lash line. The seal is a clear topcoat that locks everything in place, adds flexibility, and protects the bond from moisture, oil, and daily wear.
Together, they work as a more gentle, flexible, and longer-lasting alternative to traditional strip lash glue. Instead of a single adhesive that dries hard, bond and seal gives you a cushion-like hold that moves with your natural lash without pulling or lifting.
What Problem Does It Solve?
Traditional lash glue has a few well-known issues. It dries stiff. It can pull on your natural lashes when you remove it. And if you get it near water or oil, the bond starts to lift.
Bond and seal addresses all three. The bond formula creates a soft, flexible hold. The seal locks it in and creates a water-resistant barrier. The result is lashes that stay in place for days, not hours, without the harshness of a strip glue applied directly to your lash line.
How to Use Bond and Seal: Step by Step
The application process is simpler than most people expect.
Step 1. Start with clean, dry lashes. Remove any oil, mascara residue, or makeup from your lash line. Oil is the number one reason bonds fail early.
Step 2. Apply the bond to your natural lash, as close to the lash line as possible. Use a light, even coat and wait a few seconds for it to become tacky.
Step 3. Place your lash segment onto the bond while it's still tacky. Press gently to secure.
Step 4. Once all lashes are in place, apply the seal over the top of your lash line. This locks everything in, blends the bond, and adds the water-resistant finish.
Step 5. Leave to dry for 60 seconds. Avoid applying mascara to the roots until the bond is fully dry.
Does Bond and Seal Work With Pre-Mapped Lashes?
Yes. Bond and seal is the recommended application method for our pre-mapped segment lashes. You apply the bond to your natural lash, place the segment lash on top, then seal over the lash line. It's the technique used in our starter kits and the foundation of how iLASH lashes are applied.
New to lashes? Our step-by-step how-to guide walks you through the full process from start to finish.
Does Bond and Seal Work With Pre-Glued Lashes?
Our pre-glued lashes have adhesive already built into the band, so you do not need bond and seal to apply them. They go on without any glue, bond, or seal at all.
Some people do add a thin layer of seal over the top once applied for extra security and water resistance. This can extend wear time, but it is not required. Our pre-glued lashes already last 3-7+ days without any additional product.
Is Bond and Seal Waterproof?
Yes. Once fully dried, the seal is formulated to resist water, humidity, and sweat. This is what makes bond and seal so popular for holidays, festivals, and everyday summer wear.
For maximum water resistance, leave at least 24 hours after application before swimming or heavy sweating.
Is Bond and Seal Safe on Natural Lashes?
When applied and removed correctly, yes. Bond and seal is designed to create a gentle hold without pulling on your natural lashes. The formula is far softer than traditional strip lash glue, which means removal is much easier on your lash line.
To remove, use a dedicated lash remover or a small amount of oil-based cleanser along the lash line. Never pull the lashes off dry. If they do not release easily, apply more remover and wait 30 seconds before trying again.
Bond and Seal FAQs
Can I use mascara with bond and seal? Yes. Apply mascara to the mid-lengths and tips of your lashes. Avoid the roots while the bond is still fresh.
How long do lashes last with bond and seal? Most people get 5-7+ days of wear. This depends on your skin type, application technique, and whether you avoid oil-based products near the lash line.
Is bond and seal hypoallergenic? Formulas vary by brand. If you have sensitive eyes or have reacted to lash adhesive in the past, do a patch test before full application.
What's the difference between bond and seal and regular lash glue? Regular lash glue is a single-step adhesive that dries stiff. Bond and seal is a two-step system that creates a softer, more flexible hold with a water-resistant topcoat. It is kinder to natural lashes and lasts significantly longer.
Do I need bond and seal for pre-glued lashes? No. Our pre-glued lashes have adhesive built in and apply without any additional product.
Shop Bond and Seal
We stock our own formula in the Bond and Seal 2-in-1 Applicator, designed to work seamlessly with our pre-mapped segment lashes for a precise, long-lasting application.
New to lashes altogether? Our lash starter kit includes everything you need to get started.