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When I first heard about the launch of Kosas Soulgazer Mascara, I knew it would be exciting. Kosas have such a knack for marrying makeup with skincare, and this one is no exception. It’s not just a mascara. It’s a lengthening, lifting formula with a built-in lash-boosting peptide serum. I have been testing it out. Here’s everything you need to know.
What is Kosas Soulgazer Mascara?

The Kosas Soulgazer Mascara is a lengthening mascara and lash-boosting peptide serum in one:
- Weightless formula that builds easily without clumping
- Glides on effortlessly for a fluttery look
- Powered by a lash-boosting peptide serum
- Delivers visibly longer, fuller lashes in 6–8 weeks
- Uses a unique curvilinear moulded brush
- The brush grips every lash to lengthen, lift and define
- Long-wearing, smudge-proof, won’t flake all day
Key Ingredient
Myristoyl Pentapeptide-17
Helps create a prime environment for keratin to support hair’s natural growth cycle
Supports visibly longer, fuller lashes in 6–8 weeks
Kosas Soulgazer Mascara: How to use it & Before & After Video
Check out my reel to see how I use it.
Before & After Photos
I have a few different photos to show you, as the before and afters get better the more you use this mascara.
Here’s my before photo from the first time I used this mascara:

And here’s one very light coat the first time I used it:

Here’s one very light coat a few weeks later:

Here’s 2 coats from the same time, a few weeks later:


As you can see, the before and afters get more impressive the longer I am using it.
My Review of Kosas Soulgazer Mascara

I have to say, I absolutely love this mascara. Not only is it easy to use, but I also genuinely feel that it is improving the appearance of my lashes over time.
It delivers:
- Instant length and lift for fluttery, defined lashes
- Peptides that actually strengthen and encourage lash growth over time
- A curved brush that hugs every lash for maximum impact
- Buildable, clump-free wear that lasts all day
Packaging & Brush

The tube is chic and sleek, and very Kosas. But the star here is the curvilinear brush. It has that perfect curve that grips every lash, even those tricky inner corners, and pushes them up for a wide-eyed, lifted effect.
I can actually feel it grabbing the lashes as I apply, which makes for great definition without endless wiggling.
It’s also great for getting those bottom lashes without making a mess.

Buildable Formula
I tested Soulgazer with one and two coats to see how buildable it really is and found that you can build length and volume without things getting clumpy.
The fact it layers so easily without going spidery is honestly impressive.
Formula & Skincare Benefits
Kosas Soulgazer Mascara stands out to me because it doubles as lash care:
- Peptides to help lashes look longer and stronger over time
- Long-wearing formula that doesn’t smudge or flake and lashes stay lifted and pretty all day
- Glides on smoothly and builds effortlessly
- Easy removal – melts off without tugging
Wear Test & Performance
I have been wearing Soulgazer most days (when I have been wearing makeup) for a few weeks. Each time, my lashes have stayed curled and fluttery, the mascara hasn’t smudged or flaked, and my eyes look wide awake. I don’t use lash curlers, but I genuinely don’t think I need one anyway with this formula.
Does it work as a lash serum?
- Kosas have done clinical trials that and after 8 weeks, 100% of subjects saw on bare lashes:
- +97% increase in lash volume
- +60% increase in lash length
As I said above, I have been using this whenever I wear makeup for a few weeks (not every single day), and I definitely think that my lashes look longer and fuller. If you check out the before and after photos above, I think you will be able to notice this as time goes on.
I think that this before photo a few weeks later, show longer lashes than my original before photo above:


Verdict: Is Kosas Soulgazer Mascara Worth It?
I think you can probably guess what I am going to say here. I absolutely think this mascara is worth the price tag. Its performance purely as a mascara is excellent, and the fact that I have also notice improvement to my lashes over time means it really does double as a lash growth serum too. It’s a two for one situation!
If you want a mascara that gives pretty, fluttery lashes, amazing curl without curlers, long-lasting wear, and lash care benefits, Soulgazer delivers.
Final Thoughts
Kosas Soulgazer Mascara gives fluttery, lifted, wide-eyed lashes with a curl that actually lasts. It’s long-wearing, doesn’t flake, and adds subtle drama without bulk. I am looking forward to seeing what it can do in a few more weeks!!
FAQs for Kosas Soulgazer Mascara
Is Kosas Soulgazer Mascara suitable for sensitive eyes?
Yes! The formula is gentle, fragrance-free, and safe for sensitive eyes and contact lens wearers.
Can you build up the mascara without clumping?
Absolutely! Koas Soulgazer Mascara is super buildable. One coat gives fluttery lashes, while 2 or 3 coats add drama without spidery clumps.
Does it really work as a lash serum?
Yes! Infused with peptides, this mascara helps lashes look stronger, longer, and fuller over time. You’re basically doing your lash care while wearing mascara.
Do I need a lash curler to get a curl?
Not at all which is exciting to me as I NEVER use lash curlers (they scare me!) The curved brush lifts and curls lashes beautifully on its own, and the curl lasts all day.
Does it smudge or flake?
I haven’t noticed any smudging or flaking and it’s really long-wearing.
How many coats are recommended?
One coat for a natural fluttery look, two coats for more drama, and three coats for full glam without clumping.
Is the formula waterproof?
The formula isn’t waterproof, but it has been clinically tested to be longwearing and smudge resistant.
Is this a lengthening, volumising mascara or both?
This mascara lengthens, lifts and separates with defined volume. The formula is powered by Myristoyl Pentapeptide-17, a five amino acid peptide that is clinically proven to support stronger, healthier, and longer lashes.
Where to buy it
The Kosas Soulgazer Mascara is £28 and available now via the link below:
Check out all my Kosas Reviews here.