How to get longer eyelashes: What really works – from care to serums
Long, full eyelashes – who wouldn’t want that? The good news is that methods that work do exist.
The not-so-good news is that not all of them deliver on their promises. Castor oil, mascara tricks, eyelash serums: the list of options is long. And the results vary just as much. In this article, we break down what research shows, what merely nourishes, and what measurably lengthens eyelashes. Because when it comes to effectiveness, there’s a big difference between a scientifically proven eyelash serum and common home remedies.
In this article, we’ll introduce you to the most effective methods for longer eyelashes.
- Eyelash serums: what science says and which benefits have been scientifically proven.
- Home remedies: what castor oil, coconut oil and similar products really do, where their limitations lie, and why conditioning isn’t the same as growth.
- Quick fixes: what mascara, eyelash curlers and extensions do for your look, and why they aren’t a long-term solution.
By the end, you’ll know what actually works, what nourishes your lashes, and what you shouldn’t apply to the eye area.
How do you get longer eyelashes? A brief summary
You’re asking yourself: “What actually helps you grow longer eyelashes?”
Before we get into the details, here’s a concise summary of the key points:
- Eyelashes grow in a cycle lasting 100 to 150 days. Eyelash serums containing targeted active ingredients can extend the active growth phase.
- Home remedies such as castor oil can nourish and strengthen, but there is no evidence that they lengthen eyelashes.
- The hormone-free 8T3 Essentials Lash & Brow Serum achieved a length increase of up to +39% in an independent study.
- Instant solutions such as mascara or extensions alter the appearance, not the growth.
The natural eyelash growth cycle
To understand why serums work and why home remedies reach their limits, it is worth taking a look at the biology of eyelash growth. Eyelashes do not grow continuously. Their growth proceeds in four clearly defined phases1:
- Anagen phase (up to 3 months): The eyelash is actively growing. This is where eyelash serums, with their active ingredients, come into play; they prolong precisely this phase.
- Catagen phase (approx. 20 days): A transitional phase in which the eyelash strengthens and growth slows down.
- Telogen phase (up to 3+ months): A resting phase; the final length has been reached. The eyelash remains in the follicle but no longer grows.
- Exogen phase: The eyelash falls out, and a new cycle begins.
How fast do eyelashes grow?
Eyelashes grow by about 0.12 to 0.14 mm per day. That may not sound like much, but over the course of the anagen phase it adds up to several millimetres. Upper eyelashes are on average 8 to 12 mm long, whilst lower eyelashes are around 6 to 8 mm.
A full cycle lasts 100 to 150 days. The upper eyelid has between 90 and 160 eyelashes, the lower about 50 to 100.
How long do eyelashes take to grow back?
Between 1 and 3 eyelashes fall out every day, which is completely normal. After a lash falls out, it takes around 6 to 8 weeks for a new one to grow back. The maximum length an eyelash can reach is genetically determined and varies from person to person2.
The key factor is the anagen phase. The longer this phase lasts, the greater the potential for the eyelash to reach its maximum length. It is precisely this phase that the 8T3 Essentials Lash & Brow Serum prolongs, as a study has shown.
Eyelash serums for longer lashes: Do they really work?
Eyelash serums are no longer a niche product on the cosmetics market. There is a wide range to choose from, and the promises are plentiful. But what’s really behind it, and above all: what should you know when choosing a serum?
How do eyelash serums work?
A good eyelash serum targets the biological root cause: the eyelash growth cycle. The key factor is the anagen phase, the active growth phase during which the eyelash grows.
Certain active ingredients can prolong this phase, strengthen the hair root and can thus contribute to measurable length growth. What eyelash serums do not offer: an instant effect. Realistic results become visible after four to six weeks of consistent use at the earliest. However, those who expect this and stick with it can see real changes – not an optical illusion, but biologically measurable growth. This is the fundamental difference between a serum and a mascara: one drives real change, the other simply enhances the appearance of the eyelashes. The application itself is also important. When using an eyelash serum, consistency isn’t optional – it’s essential for visible results.
Hormone-based vs hormone-free: the difference that matters
Not all eyelash serums are the same. Some of the fast-acting serums on the market are based on so-called prostaglandin analogues (PGAs), synthetic hormones that stimulate hair growth. These ingredients are effective, but they also come with side effects: eye irritation, discolouration of the iris and dark circles under the eyes are not rare exceptions, but well-known and documented risks associated with hormone-containing eyelash serums.
Good to know
In its report3 (SCCS/1680/25, adopted on 2 February 2026), the EU’s Scientific Committee on Consumer Safety (SCCS) concluded that none of the prostaglandin analogues assessed can be classified as safe for use in cosmetic products intended to promote eyelash growth.
Alternatives are hormone-free serums formulated without prostaglandin analogues. They generally take a little longer to work, but do not carry the known risks.
8T3 Essentials: The eyelash serum for longer lashes
The hormone-free eyelash serum from 8T3 Essentials takes a different approach than most products on the market. At the heart of its new active principle is the protein sCD83, a bioactive ingredient that specifically prolongs the growth phase of eyelashes without relying on prostaglandin analogues. The active ingredient was developed in Germany, awarded an ‘excellent’ rating by Dermatest, and tailored to the needs of sensitive eye areas.
If you’re wondering, ‘Which eyelash serum makes eyelashes longer?’, we may have the answer. This is because the effectiveness of the 8T3 Essentials Lash & Brow Serum has been proven in a study.
You can find out more in the following section.
Results of the 12-week eyelash study
Twenty-one women, twelve weeks, once-daily application of the 8T3 Essentials Lash & Brow Serum: The 12-week eyelash study was conducted under dermatological supervision and combined the participants’ honest self-assessment with objective Canfield image analysis.
The results: After four weeks, 67% of participants had already noticed visibly longer eyelashes. After eight weeks, this number rose to 76%, and after twelve weeks to 81%. Not an overnight transformation, but a gradual progression. This is exactly how real eyelash growth works. And 95% rated the application as easy to integrate into their daily routine by the end of the study.
The accompanying Canfield image analysis also provided objective individual measurements: the most significant documented case showed a length increase of up to +39%. Other peak values reached up to +32% in eyelash density.
To put this into context: 71% of the participants were dissatisfied with their eyelashes at the start of the study. The results therefore reflect real-life starting points – not pre-selected ideal conditions, but people who actually had a problem and achieved a measurable improvement.
Longer eyelashes with home remedies: what really works?
Castor oil, coconut oil, aloe vera or Vaseline: the internet is full of well-intentioned advice and home remedies that are supposed to give you long eyelashes. The honest verdict: these remedies aren’t useless, but they don’t do what most people expect.
Longer eyelashes with castor oil?
This oil is probably the most popular home remedy for full and long eyelashes. Castor oil contains ricinoleic acid, which has anti-inflammatory properties and can nourish the hair structure from the outside. However, there is no evidence that it actually accelerates eyelash growth. Those who apply it consistently every evening for several months may achieve healthier and possibly less brittle eyelashes, but not longer ones. The difference: castor oil conditions existing hair but does not alter the growth cycle.
Coconut oil and olive oil for longer eyelashes?
Both oils moisturise and can reduce breakage at the tips of the eyelashes. The result: eyelashes appear longer because they split less. There is no evidence of a genuine growth effect at a cellular level. Nevertheless, they are useful as a complementary treatment, especially eyelashes damaged by daily mascara use4.
Longer eyelashes with aloe vera and green tea?
Aloe vera contains vitamins and enzymes that can soothe the area around hair follicles. Green tea5 contains epigallocatechin gallate (EGCG), which is said to have a growth-promoting effect on hair follicles. However, neither is sufficient on its own to produce measurably longer eyelashes.
Does Vaseline help to make eyelashes longer?
Vaseline forms a protective layer on the eyelash shaft and prevents moisture loss. This nourishes and protects, but has no proven effect on hair growth itself6.
Our conclusion: Targeted active ingredients are needed for measurable lengthening. Eyelashes do not grow as a result of home remedies. Furthermore, there is a risk that oils or even Vaseline may irritate the eye area, get into the eyes or block pores. Contact lens wearers may also experience problems if oils get into the eye.
Longer lashes instantly: a quick guide to the best methods
Sometimes you need results fast – for a special evening, an important meeting, or simply because you want to see results tomorrow rather than in twelve weeks. Here are the most common instant methods, along with an assessment of their pros and cons.
Mascara for long lashes:
With the right technique, you can achieve a lot with mascara: a zigzag motion from root to tip, several thin coats instead of one thick one, and a lash primer beforehand for more volume and hold. Lengthening mascaras with fibres (so-called fibre mascaras) enhance the effect further by using tiny fibres to visually lengthen the lashes. The downsides are clear: the effect is purely cosmetic, it may irritate sensitive eyes, and the mascara has to be removed by the end of the day.
Eyelash curlers and lash lifts:
A classic eyelash curler curls the lashes and gives them more lift. This makes the eyes appear more open and the lashes look longer. A professional lash lift lasts longer: the lashes are chemically shaped. The effect lasts for 6 to 8 weeks. Both methods alter the appearance, not the actual growth. But be careful: if used too frequently, the chemical treatment can severely damage the eyelashes.
Eyelash extensions:
Extensions offer a dramatic instant effect: individual synthetic hair fibres are glued directly to the natural eyelashes. The result is immediate and often impressive. The catch lies in the long-term effect. If applied incorrectly, using material that is too heavy, or repeated too often, extensions can permanently weaken natural eyelashes or cause them to fall out prematurely. Anyone who wears them regularly should actively invest in the care and strengthening of their own eyelashes during breaks, for example with an eyelash serum.
Removing eyelash extensions using home remedies and eyelash removers
The safest option is to have extensions professionally removed at a beauty salon. We strongly advise against using home remedies such as coconut oil or olive oil, as these often only partially dissolve the adhesive and can lead to the extensions being rubbed off. This is precisely what can cause your natural eyelashes to fall out and the follicles to be permanently damaged.
Longer eyelashes overnight – is that possible?
From a biological standpoint, this isn’t possible. What is sensible and effective overnight is applying a nourishing eyelash serum that supports the hair follicles during the regeneration phase. Visible lengthening requires time, patience and consistent application over several weeks.
Why do men often have longer eyelashes than women?
Many men naturally have longer and thicker eyelashes than women, without any special care, serums or mascara. The exact reason is still not fully understood, but hormonal factors play a significant role. Testosterone affects hair growth differently depending on the part of the body. In the case of eyelashes, androgenic hormones tend to promote a longer growth phase, which means the eyelash has more time to reach its maximum length.
Added to this is the lower mechanical stress. Daily application and removal of mascara, vigorous make-up removal and rubbing tired eyes weaken the eyelash hairs over time and lead to premature breakage. Eyelashes that are subjected to less stress simply retain their full length for longer.
Long eyelashes for men? Yes! Men can also benefit from targeted eyelash care. The Lash & Brow Serum from 8T3 Essentials is formulated for both women and men and is suitable for all skin types.
FAQ: Frequently asked questions about ‘long eyelashes’
Conclusion: Your path to naturally longer eyelashes
Anyone who understands the biology of eyelash growth will realise that longer eyelashes don’t come from miracle cures. Rather, they are the result of targeted, consistent care using the right active ingredients at the right time. Home remedies such as castor oil or coconut oil can nourish the lashes and reduce breakage. However, they do not interfere with the growth cycle. Quick-fix solutions such as mascara or eyelash extensions deliver fast results but do not solve the underlying problem. If you want measurably and sustainably longer eyelashes, you need a different approach.
Hormone-free eyelash serums with proven efficacy are currently the safest and most sustainable method. The 8T3 Essentials Lash & Brow Serum embodies precisely this approach: hormone-free, dermatologically tested and effective.
Discover the 8T3 Essentials Lash & Brow Serum for noticeably longer lashes.
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