[strengthening of Stress-Weakened Eyelashes] Helps eyelashes grow back healthy by incorporating ingredients that strengthen the hair root weakened by repeated stimuli such as perms, mascara, and extensions.
[Day & Night Dual-Routine Care] The formula protects the eyelashes from external stimuli during the day and replenishes nutrition to revitalize them at night.
[24H Lash Recovery Duo] The Tonic and Black Ampoule work in balance for 24 hours to enhance the recovery power of damaged eyelashes.
[Root Strengthening & Breakage alleviation] Eyelashes weakened by dryness and stress are coated with keratin and protein components to alleviate breakage and create a healthy growth environment.
[Completed Eye Irritation Test] The formula is designed for comfortable use even on sensitive eyes, allowing for worry-free daily management.

Jean L –
Fairly easy to apply for a daily routine
I ordered this lash tonic and serum because I have very thin virtually invisible!) eyelashes, and am hoping this can help to feel better about my appearance for an upcoming wedding. The product itself comes with very little information about use, so I referred back to this product page, which says that the boost tonic white-capped side) is for nighttime use, and the serum (black cap) is for daytime use. The product can be used under makeup, if allowed to fully dry before applying. I’ve just started using this product, so I’m hoping to see results with time. So far, I’ve found that the serum is simple to apply, similar to using mascara, with a curved lash brush that makes coverage easy to achieve. The serum is black in color, but does not coat the lashes as thickly as mascara would do. The tonic application is just a bit more awkward – for me – to get used to, since the applicator tip is a silicone soft-tip, and the tonic is a watery gel. Still, not too difficult; and if it helps my lashes, I will be thrilled. So I’ve added this product to my daily routine, morning and night, with high hopes. I will update here if it’s successful!
Shelly –
No Instructions, No Results
I have noticed my eyelashes are not what they used to be, so I was really hoping this serum would help. Unfortunately, it has not made any difference for me.The first issue is that there are no instructions included. While it may seem straightforward, it still leaves you guessing about how often to apply it, whether to use it on clean lashes, or how the two sides are actually meant to work together.The black side is fine and applies easily. I have been using it under my mascara, which seems like the most logical way, but I am not even sure if that is correct. Either way, I have not noticed any improvement in length, thickness, or overall lash health.The clear side was more frustrating. It does not seem to fully dry, which made it uncomfortable to wear, so I ended up stopping use of that side altogether.Overall, this product feels like a poor value. Between the lack of instructions and the fact that I have not seen any results, it is hard to recommend.
Amazon Customer –
Time will tell
I have short, stubborn asian lashes, it’s too soon to tell just how much of an effect this Inbutim double lash serum has on my eyes. Although i’m only using this exclusively now as my only lash growth serum, I don’t think my lashes have outgrown a full lash cycle so that I know to truly attribute any lash changes to this serum, that will take months.Usually anything helps, and if I’m applying this morning and night, then I’m really expecting just slightly longer and thicker lashes.This double ended dual serum is easy to use.With the black morning serum, I scrape most of it back into the tube to prevent any clumping or over product, apply it first, let it dry then curl and apply my lash primer and mascara. It hasn’t cause any formula interactions with my other cosmetic lash products. At night, the tonic just goes on my eyeline like with most serums.
Snowdog –
So far I like it, but I haven’t seen any long-term results just yet
I’ve only used the serum so far, I haven’t tried the black. I’ve only been using this lash serum for a short time, so it’s too early to comment on long-term growth results. So far, it’s easy to apply, doesn’t irritate my eyes, and feels lightweight on my lashes. I’m looking forward to seeing how it performs with continued use.
Jessica Chiang –
Try it for eyebrows too
This review is for Inbutim 24H Lash Perfect Tonic & Serum – 10 ml / 0.34 Fl. OzI’ve been using the tonic mainly on my eyebrows for about a week, so it’s probably still too early to see real results. The applicator is convenient and makes it easy to apply precisely to the brows, though I found it a bit trickier to use on my eyelashes. I like how simple it is to incorporate into my routine, and I plan to keep using the tonic on my brows to see if it helps them grow in fuller over time.I also tried the “black serum” on my lashes, which applies similarly to mascara, but the formula felt a bit too heavy and goopy for me. While it was easy to apply, I did experience some irritation and a slight tugging sensation on my lashes, which made it uncomfortable to wear. Because of that, I don’t plan to continue using the black serum on my lashes, but I’m hopeful the brow tonic alone will still give me good results.
Jessica –
I have experience with plenty of eyelash serums, this is my first time using a tonic
The black portion is the serum and the white portion is the tonic.Review on the serum:Prior to using this product, my understanding of the serum portion was that it will essentially function like it’s a super light coat of mascara, hence the black color—with the main focus being on darkening the lashes rather than lengthening or thickening them.I used this serum on clean, dry lashes and I can definitely confirm that this gave them a much darker and defined look.Definitely be aware that if you’re wanting a look similar to what you’d get from using a mascara, this is not going to deliver that.I have naturally long lashes and this just helped to make the “invisible lashes” visible by making them darker. If you have little to no lashes, I would not recommend trying this.Review on the tonic:As with most eyelash serums, I didn’t have that much specific hope for this one as they all usually seem to do about the same.All of the ones that I’ve used do not contain prostaglandin and instead use peptides and oils similarly to this one to help retain new growth.I only use these sort of products at night as the last step of my nighttime skincare routine.With consistent usage over around 2 weeks, this pretty much worked the same amount as every other eyelash serums that I’ve tried. I didn’t experience any eyelash irritation but other than that—nothing really of significance to note.Final Thoughts:Tonic – 3/5 starsWorked about the same as every other eyelash serums that I’ve usedSerum – 3/5 starsMade my “invisible lashes” much more visible—though I didn’t like that the tonic does take a little while to properly dry on the lashesOverall review of 3 stars
Amazon Customer –
Great combo, tonic and serum hoping to see results soon
I was interested in trying this eyelash tonic and serum to help my eyelashes grow healthy and stronger because I noticed on the days that I use waterproof mascara, some of my eyelashes have been falling out while trying to remove the mascara.This little set is a day and night combo care with a shield coating black serum that protects your eyelashes during the day. It is black, but is not thick enough to be used as mascara at least for me. So I just wait for it to dry and then I lightly apply my regular, not waterproof, mascara over it.The boost tonic gel that replenishes your lashes at night, is applied with a little sponge like applicator and it’s pretty easy to apply. You just use it like you’re putting on mascara. Just make sure you give it time to dry and don’t rub your eyes or you will rub it right off.I have been using this for about a week and I haven’t had any type of eye irritation or burning and I’m hoping that I will soon see longer and fuller lashes in another week or so. It is advertised that you can also use this boost tonic on your eyebrows or along your hairline. I will be trying this on my eyebrows as well to see if it fills them out a little more.Overall, I really like this tonic and serum and hoping in a couple more weeks I’ll be able to see some results.
An Artists with a purpose –
Day and night eyelash and eyebrow growth serum and tonic all in one convenient tube
I ordered this 24 hour eyelash tonic and serum to strengthen my lashes and to help thicken my eyebrows. It’s too early to tell if its working yet, but I do like that the daytime black serum can be worn under mascara or I can wear it alone and it looks like I’m wearing a light coat of mascara. The nighttime serum needs to be applied at your lashline or the roots of your eye brows to strengthen them. I have sensitive eyes and It doesn’t irritate my eyes at all. It’s easy to apply and the double end tube of day and night tonic and serum is convenient packaged in one unit.