Prostaglandin-Free Lash Serum · 90-Day Money-Back Guarantee
Prostaglandin-Free Lash Serum For Women 50+

Kiyss Eyelash Serum

For lashes that got shorter, thinner and lighter with age. One swipe along the lash line at night for fuller-looking lashes, with no prostaglandins near your eyes.

  • Fuller-looking lash line
  • No prostaglandins
  • Gentle on sensitive eyes
  • One swipe, ten seconds
Choose your supply

In stock

✓
Try it for 90 days, risk free

Use it every night. If you don't see a difference in your lashes, email us within 90 days for a full refund. No need to send the tube back.

What makes it different?

Most lash serums that show fast results use a prostaglandin. It's the same family of ingredient used in glaucoma eye drops, and it's been linked to darker eyelids, red eyes and a hollow look around the eye. We left it out. Instead, a peptide blend conditions the lashes you already have, night after night.

How do I use it?

At night, on clean dry lids, swipe the brush once along your upper lash line, right at the base of the lashes, like eyeliner. Let it dry for 30 seconds. That's it. One swipe per eye is enough.

Is it safe for sensitive eyes?

It's made without prostaglandins, fragrance or parabens. If your eyes are easily irritated, patch test behind your ear first. Take contact lenses out before you apply and wait 15 minutes before putting them back in.

How long until I see a difference?

Lashes grow slowly, so be patient with them. Most women notice softer lashes in the first month and a fuller-looking lash line from week 8. Give it 12 weeks of nightly use for the full result. That's why you get 90 days to try it.

4 Signs

Your Lashes Have Changed,
It's Not In Your Head

Mascara has nothing left to grab

Gaps at the outer corners

Lashes look lighter, almost invisible

More lashes on the cotton pad

You're not being vain. After 50, lashes really do grow back shorter, thinner and lighter.

Most Lash Serums Make You Choose. Your Lashes Or Your Eyes.

The serums that work fast usually rely on a prostaglandin, an ingredient from glaucoma eye drops. It's been linked to darker lids, red eyes and a hollow look around the eye. The gentle ones often do nothing at all. We made the one in between.

No Prostaglandins

Nothing that can darken lids or change the look of your eyes.

Made For Lashes Over 50

For lashes that grow back shorter and thinner with age.

Gentle Every Night

Mild enough to use daily, for months.

A Serum That Makes Your Own Lashes
Look Like More

A Lash Line That Looks Filled In

The gaps at the corners start to look less obvious, even without makeup.

Lashes Your Mascara Can Grab Again

One coat looks like it used to, without building layers.

Softer, Less Brittle Lashes

Fewer lashes lost when you rub your eyes or take off makeup.

Eyes That Look Open And Rested

Fuller-looking lashes frame your eyes so you look like yourself again.

Brows Can Use It Too

Swipe it on thinning brow tails with the same tube.

What's Inside, & What Never Is

Every ingredient is here to condition and protect the lashes you already have.

Peptide Complex

Peptides that condition lashes from the base, so they look fuller and stronger over time.

Biotin

A B-vitamin known in hair care for helping lashes and brows look thicker.

Panthenol

Pro-vitamin B5. It softens dry, brittle lashes so they bend instead of snapping.

Hyaluronic Acid

Holds moisture around the lash so it stays flexible between washes.

Never inside: prostaglandins, parabens, fragrance.

The Numbers Behind Thinner Lashes

Your lashes did not just "get worse". Here's what research says happens with age.

Age 22 to 290

Average lash length

Age 50 to 650

Average lash length

The Difference0

Shorter lashes, on average, after 50

In Our Formula0

Prostaglandins

Lash length data: Glaser et al., 2014, study of eyelash length by age group.

One Swipe. Ten Seconds. Every Night.

Step 1

Start with clean, dry lids. Take out contact lenses.

Step 2

Swipe once along the base of your upper lashes, like eyeliner.

Step 3

Let it dry for 30 seconds. One swipe per eye is enough.

Step 4

Repeat every night. Your lashes do the rest while you sleep.

From Night One To Week Twelve

Lashes grow slowly. Here's what to expect when you use it every night.

Weeks 1 to 4

Your Lashes Feel Softer First

You won't see new length yet, and that's normal. What you'll notice first is softer lashes that feel less dry and don't come off as easily on your cotton pad.

Weeks 4 to 8

Fewer Lashes On The Pillow

Lashes feel stronger when you take off your makeup. Mascara starts to grab more lashes in one coat.

Weeks 8 to 12

Your Lash Line Starts Looking Fuller

Look in the mirror without mascara. The gaps at the corners start to look filled in. This is when people start to notice.

Week 12 and beyond

Lashes That Look Like Yours Again

Your lashes look fuller and darker from base to tip. Keep using it every night to keep them that way.

Why Lashes Over 50 Need A Different Serum

 
Ours
Prosta­glandin serums
Basic lash oils
No prostaglandins
Yes
No
Yes
Made for lashes over 50
Yes
No
No
Not linked to darker lids
Yes
No
Yes
Gentle enough for every night
Yes
Not always
Yes
Fuller-looking lashes
Yes
Yes
Rarely
Refund with no return needed
Yes
Rarely
No
Added to your bag