The mistake isn't over-plucking, it's copying. You screenshot a brow you like on a completely different face and try to recreate it on your own, and the arch ends up sitting somewhere it was never meant to.
Brow hair grows roughly a quarter of an inch a month, so a borrowed shape doesn't just look wrong today, it sets you back the best part of a year.
Lashes get the same treatment. Most twenty somethings lean entirely on extensions and never look after the natural line underneath, so by the time a set comes off, what's left is patchy and short.
The fix: a proper shape consultation using your own bone structure as the map, plus our Ultra Slim Brow Definer for filling gaps without committing to a heavy line while your natural brow finds its feet. If thinning's already started, our Brow Boost now beats waiting five years.
Most common brow & lash mistakes for every decade
Sit in a threading chair long enough and you start noticing patterns. The mistakes that actually cost women years of growth aren't the obvious ones, they're habits, and they change shape almost exactly every ten years.
Before you read on, have a guess. What's yours?
Your 20s
Borrowing Someone Else's Shape
Your 30s
Speed Over Precision
Mornings get shorter, so brows become a thirty second job in the car mirror rather than something you actually look at.
The result is heavy, too dark, drawn on rather than filled in. This is also the decade with the most lash extension damage, usually from going back for infills every two weeks instead of every three or four, which pulls out healthy lashes along with the old set.
A rushed routine doesn't save time, it just moves the cost to later, usually a longer session trying to fix an uneven line with a cotton bud.
The fix: our Brow Build Gel for precision in one swipe, or our Tinted Brow Gel in Clove if grey is creeping in and your usual shade suddenly reads too dark. For lashes, a recovery week with our Luscious Lash Oil between extension appointments lets the natural line rebuild.
Your 40s
Ignoring That Your Brows Have Changed
This is the "but I've always used this" decade.
Declining oestrogen thins brow hair the same way it thins hair on your scalp, so a pencil that matched you perfectly for fifteen years suddenly reads too dark or too orange, because the hair underneath has changed even though the product hasn't.
Layering on more to compensate only draws attention to the gaps.
The fix: a softer, cooler shade like our Kajal Lash Liner for a gentler line, our Brow Boost to work on density rather than camouflage, and a lighter formula like our Lash Lift Mascara that won't weigh down drier lashes. If it's been five years since your last consultation, book one.
The shape that suited you at thirty may not suit the face you have now.
Your 50s
Compensating Instead Of Correcting
Two opposite mistakes, same root cause. Some women stop doing anything at all, worried about looking like they're trying too hard, and sparse brows read as tired.
Others pile on darker product to compensate, which ages the face more than sparse brows ever would. Both come from a fear of getting it visibly wrong.
Brows and lashes carry more visual weight on the face in your fifties, not less, because they frame features that are naturally softening. What actually works is gentle, deliberate definition.
The fix: our Brow Highlight for a soft lift under the arch, our Clear Brow Lock to hold finer hairs without stiffness, and our Nourishing Brow Oil nightly. For lashes, don't give up on serum. Our Lash Boost still works at fifty, it just asks for a little more patience.
Your 60s
Assuming It's Too Late
The most common mistake here isn't a technique, it's an assumption. "This is just how my brows are now" usually isn't true.
Often a shape chosen decades ago has simply never been revisited, so a woman is wearing an eyebrow drawn for a twenty five year old's face on a face that's changed enormously since.
The other version is giving up on growth products, assuming follicles stop responding at this age. They don't. They just need consistency and a realistic timeline.
The fix: book an actual reshape rather than continuing to fill in an outdated outline, keep our Brow Tamer and Super Grip Tweezers Plus on hand for maintenance between visits, and stay consistent with our Lash Boost and Luscious Lash Oil. Soft, buildable colour over a hard drawn line will always look like it belongs to the face wearing it.
So, Which One Was Yours?
None Of These Are Permanent
If you recognised yourself somewhere in there, you're in good company. Every one of these mistakes is common enough that we could set our watch by which decade someone's booking in from, and none of them are permanent once you stop working against what your face actually needs right now.
Want the fuller picture? Our Brow & Lash Routine For Every Decade picks up exactly where this leaves off.
Shop Today's Fix
See allGive brows and lashes some extra TLC with our edit of nourishing oils, brow-boosting serums and super-charged masks to strengthen, condition and encourage brow and lash growth.
Frequently Asked Questions
What is the most common eyebrow mistake in your 20s?
Copying a shape from someone else's face instead of working with your own bone structure. Since brow hair grows slowly, this can take the best part of a year to grow out.
Why do my eyebrows look different in my 40s than they used to?
Declining oestrogen thins brow hair in your forties much like it thins hair on your scalp, so a shade that worked for years can suddenly look too dark or harsh.
Is it too late to grow thicker eyebrows or lashes in your 60s?
No. Follicles keep responding to consistent stimulation well past sixty. Serums usually appear to not work because they're stopped too early, not because they've stopped being effective.
Should I stop using lash serum if I don't see results straight away?
Give it eight to twelve weeks of daily use, roughly one full growth cycle, before judging results. Stopping after two or three weeks is the most common reason people think it hasn't worked.
How often should I get my eyebrow shape professionally reviewed?
Every three to five years as a rule, sooner if your face shape or hair density has changed. A shape that suited you at twenty five often needs adjusting by your forties.
