Keratonic Lash and Brow Serum

Keratonic Lash and Brow Serum Review

Ok if you follow my blogs you know how obsessed I am about lash serums by now right? My short stubby asian lashes don’t stand a chance with lash lifting without the help of these magical beauties that miraculously make little fine hairs longer!



Unfortunately, in 2019 after using Eyenvy on and off for 2 years I developed a severe allergy to Eyenvy. It started out with my eyes getting a little dry at first, but my lashes were growing sooo wildly long and fast I ignored the signs. First of all, my lashes started growing at hyper-speeds. So even though it was long, they would shed out so quickly that  I was needing a lash fill every week, and when I had a Triple Keratin Lash Lift, my lift would only last about 3-4 weeks before another lift was needed. 

Then the skin around my eyes started turning red, then purple, and my eyes were incredibly dry and itchy that I’d scratch off all my lash extensions at night from the itch. Eventually I pieced together this wasn’t caused by seasonal allergies and I stopped using Eyenvy altogether and my skin turned back to its normal colour and my lashes shrunk back to their puny lengths, like my heart 🙁



I told the tale of my lash woes to my friend Michelle who owns a prestigious lash and brow studio in Calgary called Face Amor, and at the time she and her bestie (also named) Tammy were in development of a new lash and brow growth serum that included more natural ingredients. The serum didn’t have any chemicals in it that would trick your lashes into thinking it’s still in the anagen phase (lash lingo for “growth phase” of the lash cycle) so it was safe for lash lifting and wouldn’t make it grow out as fast.

Keratonic Lash and Brow Serum


I was super skeptical after the previous experience with Eyenvy but I tried it out for 2-3 months and though I didn’t notice anything right away, by the time I got my next Triple Keratin Lash Lift, my lashes definitely looked longer! It didn’t necessarily look fuller but definitely my dinky lashes looked longer. 

Keratonic Lash and Brow Serum



From the Bottle:

  1. Thoroughly cleanse and dry skin prior to application
  2. Shake the bottle for 15 seconds.
  3. Remove excess product on the applicator brush by swiping both sides on inner rim of the bottle
  4. For EYES: Brush once along the upper base of the lash line as you would when applying eyeliner
  5. For BROWS: Brush along the base of the brow hairs from the front working you way to the tail.
  6. Let dry for 90 seconds before applying other products



  • Keep away from children
  • Avoid getting product directly in eyes (it stings a bit!)
  • Discontinue if irritation or redness persists
  • Not suitable for those who are pregnant or breastfeeding, under the age of 18, undergoing chemotherapy, have an ocular disorder or are under the care of a physician
  • Discolouration of the eyelids may occur with excessive use (this didn’t happen to me thank goodness!)



Here is a side by side comparison of what my lashes looked 3 months previously looked like to after using the Keratonic Lash and Brow Serum:

Keratonic Lash and Brow Serum

Left Eye Before

Keratonic Lash and Brow Serum

Left Eye After


Keratonic Lash and Brow Serum

Right Eye Before

Keratonic Lash and Brow Serum

Right Eye After

You can definitely see that it looks like the lashes themselves appeared a little thicker, and the average overall length seems longer, especially on the right side where the longest length was about 8mm and now the longest length was 10mm!

It was hard to tell that the left eyelashes grew longer because it looked the same length on the ruler, but because the lashes were still curled in the after photos, they actually were longer but appeared the same length!



$60CAD for a 3.5mL sized bottle 

I thought this was really well priced considering many other lash and brow serums are in the $70+ range for 2mL or less.



Purified water, hyaluronic acid, collagen, myristoyl pentapeptide-17, biotinoyl tripeptide-1, pentylene glycol, panthenol, biotin, panax ginseng extract, swertia japonica extract, pumpkin seed extract, calamus root extract, vitamin b7, serenoa serrulata fruit extract, oligopeptide-10, arginine, tocopherol acetate


The only drawback with the Keratonic is that it does contain quite a few fruit extract oils so it is not lash extension-friendly and may contribute to poorer retention. This product is best for normal use or used in conjunction with lash lifting or brow lamination. It is also not advised for women who are pregnant or breastfeeding.



In store or online at Keravie Lash Loft with free shipping over $50 across Canada.



You can also enter to win a FREE Keratonic Lash and Brow Serum by entering our giveaway on Instagram by following these simple steps:

  1. Follow us on Instagram @keravielashloft 
  2. Like this post
  3. Tag friends who love long lashes! 1 Tag = 1 Entry, unlimited entries allowed.



Overall, I’m really happy with the effects of this serum, especially considering I’m allergic to many others and would happily refer this product to others if you’re looking to grow your lashes longer without the risk of it over-growing. This is especially great for those who get lash lifts!

I would advise skipping this however if you are getting lash extensions just because it’s not extension-friendly.

Have more questions? Drop me a line or send us an email 🙂

xo, Tammy