Everything You Need to Know About Lash Serums | Buying Guide

If you’ve never heard of eyelash serums or aren’t entirely sure about the convenience of using them, don’t worry, today we’ve come to tell you everything. Below, we answer frequently asked questions about these revolutionary cosmetic products. Started! Eyelash serums are cosmetic products capable of stimulating eyelash growth. 


What is a lash serum, and what is it for?

lash serum

  1. Eyelash serums are cosmetic products that, thanks to a composition based on proteins, enzymes, and active agents, can stimulate the growth of the eyelashes and the activation of the eyelids’ follicles. Therefore, its continued use gives us: Increased lash growth naturally.
  2. Lashes with a healthier, stronger and longer appearance.
  3. Better hydration of the lashes, which results in a higher volume.
  4. A considerable reduction in eyelash drop.

Besides, its ingredients are natural and take care of your eyelashes. That’s why it’s one of the most in-demand cosmetic treatments today, and more and more women benefit from all these advantages.


What types of eyelash serum are there?

  • Although all serums have in common the characteristics we have just mentioned, the truth is that some have specific properties for each type of need. The main needs that we can have in the eyelashes are: Lengthen.
  • Increase volume
  • Strengthen

Thus, depending on your goal (lengthening your lashes, strengthening them or increasing their volume), you’ll have to choose a serum specially designed for that purpose. Most manufacturers usually specify the type of serum in question, so you won’t find it very difficult to differentiate them.

Its main function is to protect, nourish, moisturize and strengthen the lashes, making them grow naturally.


How and when should the eyelash serum be applied?

  • We’ve already warned that the eyelash serum results are not instantaneous, so you should be patient and consistent with treatment to achieve the goal. Specialists recommend applying it twice a day for a minimum of four weeks. Don’t worry; you won’t think twice a day is so much when you see how easy it is to apply: Following your daily cleansing routine (morning and nighttime), make sure your eyelid skin eyelashes are completely clean before applying the serum.
  • Eyelash serums usually include a brush or comb that makes it much easier for you to apply.
  • Apply along all lashes, but pay attention to the roots. In this way, the product will penetrate the follicle and have more effect.
  • Although it is not recommended, you can apply your mascara on top in the case of mornings. But, look, you have to wait for the serum to be completely absorbed.

See how easy it is? It has no mystery. Include these four steps in your daily routines, and you’ll notice the difference. You should also know that the four-week recommendation is indicative and that you can continue to use it for longer, all you want until you get the results you expect.


Besides using a serum, how can I extend the life of my eyelashes?

We all like to wear healthy, strong and long eyelashes. However, after we see that they are more delicate than we think, we may wonder what we can do to keep them in that state. The main key, however, tired we are of hearing it, is to remove makeup every night. Sometimes it’s lazy, but it’s necessary. Of course, it is more than recommended to use specific treatments to nourish and care for eyelashes, such as eyelash serums. We must also pay attention to the cosmetics we use on them since, in many cases, it is their ingredients that abuse and damage them.


Can eyelash serum have the same aesthetic effect as mascara?

Once they have known the eyelash serums, many women wonder if, with them, they will be able to achieve the same visual effect of long and bulkier eyelashes that mascara produces. The answer is yes, albeit with nuances. As with any cosmetic, the results we expect vary from person to person. While it is true that the serums do not provide the intense black tone that is achieved with mascara, their continuous application nourishes, regenerates and strengthens the lashes. Therefore, the effect will be similar to that of mascara, but constantly and without using a drop of makeup. Don’t expect the results to be instantaneous.


So what’s the difference between a serum and mascara?

If we have said that it is possible to achieve (at least partially) the same effect of long lashes with a serum as with a mask, likely, you are now raising this question. Don’t worry, it’s normal. Take a good look at the comparison chart below, and you’ll see the difference:


Can I use an eyebrow eyelash serum?

Surely, if you’ve already heard about eyelash serums, you’ll think the answer is yes; they can also be used to encourage growth. Eyebrows. Well, we’re sorry to inform you that you’re completely wrong. You and most women, as this is one of the most widespread myths (1) about this product. Although many brands announce that their eyelash serums can also be used on eyebrows, the truth is that the growth of eyebrows and eyelashes is not the same, so it would not make much sense to do so. However, its use on the eyebrows is neither harmful nor harmful, so that you could do so, but do not expect the same results.


Buying Guide For Lash Serums

Buying Guide For Lash Serums

Now that you’ve known eyelash serums more in-depth, you’re probably thinking about buying one. So, before we say goodbye, let us give you some last tips to get your choice right. 


First, we must carefully observe our eyelashes and assess our needs. In this way, you can choose the type of lash serum that meets those needs. Previously, we mentioned that there were three main types: elongator, strengthener and volume booster.

Remember that these types refer to the most emphasized function but that all serums will nourish, repair and grow your lashes. If you can’t decide on a specific one, don’t worry, you can use a general one with which to benefit from all the advantages, even if it’s not for a particular need.

Following your daily cleansing routine, make sure that the skin on your eyelids and eyelashes are immaculate before applying the serum. 



As this is a product that we will apply daily on the eyelashes, once we are clear about the type of eyelash serum we need, we need to look at the ingredients. That the composition of the serum is as natural as possible and has certain ingredients is essential to achieve the expected results.

In this sense, it is recommended that the ingredients have a plant and mineral origin, such as:

  • Argan seed oils, rosehip or sesame: they provide nutrition to the eyelashes.
  • Aloe vera: to improve the penetration of the serum and nourish the eyelashes.
  • Peptides: to increase the length and thickness of the lashes.

However, an ingredient that was very commonly used in this type of cosmetics, prostaglandin, has been removed as it is a medical component that “can produce unwanted side effects[…], since even if it has adapted to cosmetics, its purposes are actually medical” (2). Therefore, be careful that the chosen serum does not contain it.



Thirdly, we should not forget that most of the ingredients in eyelash serums are (or should be) of natural origin, so they do not incorporate preservatives. Therefore, it is essential that, both when buying it and during its use, we pay attention to the expiry date indicated by the manufacturer.

It may sound Chinese to us, but it is important to know that the expiry date should not be more than thirty months. It must follow the requirements established in regulating the Spanish Agency for Medicines and Healthcare Products (AEMPS) about cosmetic products (3). Don’t forget that using unhealthy cosmetics can be harmful.



Finally, if we still want to refine the search a little more, it is advisable to consider the serum format. Well, in this case, it would happen just like with mascara. Previously, we mentioned that many models already include the brush or comb to make the task easier when applying it.

Always choose the most comfortable format so that when you are going to apply the serum, it is easy for you to do better. Remember that the important thing is that the product penetrates the follicle to get the best possible results, so the easier it is, the better.



No more having to apply several layers of mascara to show off an enigmatic and deep look. Thanks to eyelash serums, we can achieve all this in a natural way and from the inside because, unlike the effects of mascara, the serum results are lasting.

Of course, not everything could be so beautiful. The results are more durable than mascara, but we must be consistent with the treatment and apply the serum every day (twice, preferably). But be patient; we assure you that, in the long run, it will have been worth it. What are you waiting for to get started?

If you liked our guide to eyelash serums, share it on social networks with all your friends and leave us a comment. We’d love to hear from you about these revolutionary cosmetics!

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I am tech writer who is passionate about technology and spearheads the core writing team on tech news

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