Truth about lash growth serums
Do They Really Work?
As someone who used to live and breath lash extensions, I eventually experienced the downside—the weight weakened my natural lashes, leaving them fragile and sparse. My final set ended in a bad reaction, leading me to rip them out (along with my real lashes—ouch). Praise the lord for lash growth serums and tints, my natural lashes have never been better.
With so many lash serums on the market making big claims, it’s easy to feel overwhelmed. The truth? Not all of them work, and some are pure marketing hype. Choosing the right product and using it correctly is what really makes the difference. Let’s break down the facts about lash serums—their ingredients, potential risks, and how to find one that actually delivers results.
Lets talk ingredients.
Peptides- are short chains of amino acids that serve as building blocks for proteins like keratin, which is crucial for hair structure. In lash serums, peptides help fortify and strengthen lashes by improving elasticity and reducing breakage. They also support the hair follicle, ensuring healthier and more resilient lash growth.
Biotin (Vitamin B7) - plays a vital role in keratin production, the protein that makes up hair, skin, and nails. By enhancing keratin synthesis, biotin strengthens the lashes and promotes growth, making them less prone to shedding or becoming brittle.
Hyaluronic acid - is a powerful humectant that attracts and retains moisture. When applied to lashes, it hydrates and conditions the hair, preventing dryness and brittleness. Well-hydrated lashes are more flexible and less likely to break, helping them appear fuller and healthier.
Prostaglandin analogs - are synthetic compounds that mimic the effects of natural prostaglandins in the body. They work by extending the anagen (growth) phase of the lash cycle, allowing lashes to grow longer and thicker over time.
While effective, prostaglandin analogs can cause side effects, including:
Irritation & Redness – Some users experience eye irritation, redness, or itching.
Darkening of the Eyelid Skin – Prolonged use can cause hyperpigmentation on the eyelid, leading to a darker appearance.
Iris Color Changes – In rare cases, particularly with prescription-strength formulas, prostaglandin analogs have been known to cause permanent darkening of lighter-colored irises.
Lash Shedding Upon Discontinuation – If you stop using a serum with prostaglandins, lashes may return to their original length and thickness, sometimes shedding more than usual.
For those concerned about these side effects, peptide-based serums offer a safer, irritation-free alternative for supporting lash health and growth.
Tips for Choosing a Lash Serum:
Look for formulas - that are ophthalmologist-tested and free from parabens, sulfates, and prostaglandin derivatives.
Check the ingredient list – Look for nourishing, natural components like biotin, peptides, and panthenol.
Avoid harmful additives – Skip serums with prostaglandin analogs if you have eye sensitivity.
Read reviews and consult experts – Check testimonials and, if needed, ask your dermatologist or lash tech for recommendations.
My Fav - the holy grail
If you ask me, Lash Rescue is the holy grail of lash serums! While they offer an amazing range of lash and brow health products, their growth serum is hands down my number one pick.
What makes it so special?
Australian-made 🇦🇺
Vegan-friendly & cruelty-free 🐰
No harsh ingredients – especially no prostaglandins (WINNING!)
Oil-free formula – making it safe to use with lash extensions 🙌
Other Cruelty-Free & Safe Lash Serums I Recommend:
Lash Rehab
Lash Therapy
Lilash