Do Lash Serums Really Work? The Science Behind Longer Lashes
In a world full of lash extensions, falsies, and miracle mascaras the question on everyone’s mind is:
“Do lash serums really work?”
The short answer?
Yes — when the ingredients are right, and the product is backed by science.
If you're in Ireland and considering investing in a lash growth serum, this guide will walk you through what actually works, what to look for, and how to get the best results for longer, fuller lashes.
What Are Lash Serums?
Lash serums are concentrated treatments that help to stimulate natural eyelash growth, improve lash condition, and reduce breakage or fallout.
Unlike makeup or extensions that give a temporary effect, serums work at the follicular level to encourage your lashes to grow naturally over time.
There are two main types:
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Prostaglandin-based serums – powerful and fast-acting, often used in medical-grade lash growth products.
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Natural and peptide-based serums – gentle on the eyes, designed to nourish lashes over time with fewer risks of irritation.
🔬 What Does the Science Say?
Lashes grow in cycles and that cycle can be supported with the right nutrients and stimulants.
Lash serums work by:
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Extending the anagen (growth) phase of the lash
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Strengthening the hair follicle to reduce breakage
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Increasing lash density and thickness
Key ingredients to look out for include:
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Peptides – to stimulate growth and improve lash strength
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Baicalin – to support healthy follicles and prevent lash loss
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Wheat germ extract & soybean extract – rich in amino acids for regeneration
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Prostaglandin analogs – synthetic compounds proven to boost lash length (used with caution)
💚 So, Do Lash Serums Really Work?
They do when you use the right one consistently. Results typically appear in:
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4 - 12 weeks for natural, peptide-based serums
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2 – 12 weeks for prostaglandin-based serums
At Lerelle Beauty, we offer two targeted serums based on years of beauty + pharmacy experience:
💥 Lashes2Love FullGrowth Serum
Designed for fast results with visible thickness in 2–12 weeks.
Formulated with peptides, baicalin, and prostaglandin analogs for serious lash growth.
⭐ 80% of women wanted to continue using it after just 8 weeks.
Available online & in pharmacies and salons nationwide, check our stockists here.
RRP: €24.99
🌿 Biopeptides Eyelash Growth Serum
Perfect for sensitive eyes or anyone avoiding prostaglandins.
It’s gentle, nourishing, and prostaglandin-free, with soy seed extract, baicalin and wheat germ.
⭐ 93% of users noticed stronger, healthier lashes.
Also stocked in pharmacies and salons across Ireland, check our stockists here.
RRP: €24.99
🕒 Tips for Getting the Best Results
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Use daily – consistency is key
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Apply to clean skin – always before makeup or skincare
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Stick with it – real growth takes time
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Don’t rub your eyes – preserve your lashes' life cycle
📍 Where to Buy in Ireland
Lerelle Beauty lash serums are available both online and in pharmacies and beauty salons nationwide.
👉 Check our stockist list here to find one near you, or order directly at lerellebeauty.com
💌 Final Thoughts
If you’re ready to ditch the falsies and give your natural lashes the love they deserve, lash serums are absolutely worth the try. Backed by science and built for results, they’re one of the best long-term beauty investments you can make.
Whether you want fast results or a natural, gentle formula - Lerelle Beauty has your lashes covered.