Prostaglandin Lash Serums vs Natural Alternatives: What to Know

Prostaglandin Lash Serums vs Natural Alternatives: What to Know

Lash serums are one of the most popular beauty products in 2025, but not all serums are created equal.

If you've been researching eyelash growth products, you've probably come across the word “prostaglandin” and wondered what it means... and whether you should be using it.

In this post, we break down the differences between prostaglandin lash serums and natural alternatives, their pros and cons, and how to choose the right one for you,  especially if you're based in Ireland.

🧪 What Is Prostaglandin in Lash Serums?

Prostaglandin analogs are synthetic ingredients originally used in glaucoma eye drops. When patients started reporting longer, thicker lashes, the beauty world took notice.

They are now used in many high-performance lash serums to stimulate lash growth, often with dramatic results in 8–12 weeks.

Common names to look for on labels:

• Isopropyl Cloprostenate

• Bimatoprost

• Dechloro Dihydroxy Difluoro Ethylcloprostenolamide

• Tafluprostamide

✅ Pros of Prostaglandin Lash Serums

• Fast results – many users see visible growth within as fast as within 2 -4 weeks

• Thicker and longer lashes – especially for those with lash fallout or thinning

• Backed by clinical studies – used in pharmaceutical and cosmeceutical settings

⚠️ Cons & Side Effects to Consider

• Possible irritation – redness, dryness, or itching for sensitive users

• Darkening of the skin – pigmentation around the lash line may occur

• Discolouration of iris – extremely rare but possible if product is consistently put in the eye rather than just on the lashes.  

• Not recommended during pregnancy or breastfeeding

🌿 What Are Natural Lash Serums?

Natural lash serums avoid prostaglandins entirely. Instead, they rely on nourishing ingredients to strengthen lashes and support natural growth.

These include:

• Peptides – to stimulate and protect hair follicles

• Botanicals like Baicalin & Soybean extract – for regeneration and moisture

• Wheat germ extract – to reduce lash breakage

• Vitamins and antioxidants – to support lash health over time

While natural serums may take a bit longer, they are safer for sensitive eyes and daily use.

🔄 So Which One Should You Choose?

It depends on your goals, sensitivity, and timeframe:

💚 Our Recommendations at Lerelle Beauty

💥 Lashes2Love FullGrowth Serum

• Contains prostaglandin analogs

• Delivers visible length, thickness, and growth

• Perfect for those seeking fast and full results

• RRP: €24.99

• Available online and in Irish pharmacies & salons

🌿 Biopeptides Eyelash Growth Serum

• 100% prostaglandin-free

• Safe for sensitive eyes and everyday use

• Great for long-term lash strengthening and growth

• RRP: €24.99

• Also stocked in pharmacies & beauty salons nationwide
  👉 View our stockist list here

• 👉Want to check it out on LerelleBeauty.com website? 

✨ Final Thoughts

Prostaglandin lash serums can be incredibly effective — but they’re not for everyone. If you're looking for fast results and your skin can tolerate it, they’re a great choice. But if you prefer a gentler, more natural approach (especially if you have sensitive eyes), a peptide-based serum is your best friend.

At Lerelle Beauty, we believe in transparency, quality, and choice — so you can feel confident no matter which option you choose.

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