For years, eyelash extensions have focused almost exclusively on the upper lash line—creating dramatic cat eyes, doll-like fluff, and various forms of wispy volume that turn heads. But in 2025, a subtle yet transformative trend is taking center stage: lashes on the bottom. Once seen as optional or even risky, lower lash extensions are now a sought-after enhancement; symmetry, near-perfect definition, and that all encompassing “bright-eyed” effect are what clients are looking for.
Whether you’re a lash artist expanding your service menu or a more personal beauty enthusiast interested in full-eye framing, understanding how to properly apply and at least partially care for these bottom lashes is essential. This guide will cover the reasons for their growing popularity, the specific ways they differ from top extensions, and some all-around expert tips for near-flawless application.
What Are Lashes on the Bottom?
Lashes on the bottom refer to individual eyelash extensions carefully applied to the natural lower lashes. Professional grade adhesive is used; strip lashes or any form of clustering are excluded (overly heavy lower lashes being the primary concern). True bottom lash extensions are, as stated, ultra-lightweight, short, and designed to complement the delicate lower lid.
When done correctly, enhancing the eye’s shape is the primary benefit – balance is added to more dramatic top sets. Larger, open eyes (hooded or monolid clients being prime examples) are the end result the client desires.
Why Add Them?
Eye Symmetry: Top only extensions can create a visibly top-heavy look.
Appearing Larger: Defining the lower waterline as mentioned above, frames the iris.
Special Occasions: Full eye sets (bottom included) are and will always be, to me at least, the “complete” look.
Anime / Wispy Styles: Lower definition is part of the new and ever-evolving beauty of lash extensions. Wide awake eyes are beautiful.
Key Differences Between Top and Bottom Lash Extensions
While both use similar application principles, lashes on the bottom require several special considerations:
Length, Curl, and Thickness
Bottom natural lashes are shorter, finer, and less dense. Extensions must therefore be:
Length: 4–7 mm (exceeding this is not ideal, 8mm being the absolute max)
Thickness: 0.10mm, 0.12mm, max out at 0.15mm
Curl: Gentle curls – J, B, or very soft C styles. D or L+ curls poke the skin and look ‘unnatural’
Recommended: Lashfine’s Faux Mink Pro (the featherlight weight is perfect for this purpose)
Application Technique
The classic 1:1 technique is the only one I recommend. Volume fans (any form of 2D+ weight) add unnecessary strain; direct bonding to the skin should be avoided. One extension per natural lash is the standard.
Pro tip: Micro tape or small gel patches can be used to gently pull the lower lid down, clear visibility is the end goal.
Retention Time
Constant blinking, tear exposure, and the previously mentioned thinner natural lashes all contribute to shorter life spans. Top extensions last 3-4 weeks, bottom sets 1-2.
Clients should expect more frequent fills if a full set is desired.
Application Time
A full bottom set takes 15-25 minutes. Easy to book as an ‘add on’ service, or at least a partial fill.
Density Matters
Again, less is more. Outer two thirds of the lash line are ideal for coverage. Inner corner (and all sensitivity) should never be filled.
Is it safe to wear lashes on the bottom?
Yes, to me at least. Professional application is and always will be, safe.
Proper isolation and minimal adhesive use
Client consultation (not recommended for those with dry eyes, allergies, or very sparse lower lashes)
Never attempt DIY bottom lashes—improper placement can cause corneal abrasions or complete lash loss.
Aftercare Tips for Lashes on the Bottom
Lower lashes are closer to tears, oils, and constant pillow friction; extra care is needed:
Avoid rubbing your eyes—even gently
Skip mascara entirely; unnecessary and detrimental to adhesion
Use oil-free cleansers, Lashfine’s Basic Scent Lash Shampoo being a personal favorite
Daily cleaning with a soft brush or lint-free swab
Sleeping on your back if possible to reduce all forms of friction
Refills every 10-14 days to maintain that fullness
Common Myths Debunked
❌ “Bottom lashes make eyes look smaller.”
✅ Truth: Correctly applied, they open up the eye, defining the full perimeter.
❌ “They always fall out in 3 days.”
✅ Lasting time is dependent on technique and aftercare; 1-2 weeks is the new ‘standard’.
❌ “You need volume fans for impact.”
✅ Classic 1:1 extensions provide all definition required—volume below is overkill and unsafe.
Final Thoughts: Are Lashes on the Bottom Worth It?
Absolutely. A polished, balanced look is what many clients are after. Daily or near-daily sets of any kind of lash (top or bottom) will always have a place in modern beauty.
For the lash artist, offering bottom extensions is a true sign of advanced skill and/or time invested into the full, all round look of a client’s eye.
Ready to see the end result? Lashfine or otherwise, I believe we all want to see beautiful, defined, and (to me at least) magical lower lash extensions.
Bottom or top, we all just need a little more of that beautiful human detail we all love.
