Do Prostaglandin-Free Lash Serums Actually Work?
Do prostaglandin-free lash serums actually work, or is it just clever marketing? In our latest editorial, Cosmetic Chemist Sophia Bennett strips away the hype to look at the hard biological...












The serum uses advanced nanocell technology and a proprietary growth-support formula to nourish the lash root environment and support the natural lash growth cycle.
A full treatment typically takes 8–12 weeks, which aligns with the natural lash growth cycle and reflects the complete lash growth and renewal process. Consistent daily use is essential for optimal results.
Most users notice the first visible results after 3–4 weeks of regular use.
The serum works in harmony with the natural lash growth cycle, which typically lasts 8–12 weeks, so full results develop gradually. With continued use, lashes appear noticeably longer, thicker, and fuller, with improved density and overall condition.
Yes. QUALASH® Eyelash Serum has been dermatologically tested and assessed under strict European cosmetic safety standards.
As with any cosmetic product, we recommend a patch test before first use.
For optimal results, apply the serum once daily for the first 3 months.
After achieving the desired effect, reduce application to 2–3 times per week to maintain results and prevent lashes from becoming excessively long.
Yes, the lash serum can be used with lash extensions. Apply it once daily on clean, dry skin, 1–2 mm above the upper lash line, just like an eyeliner.
Do not apply the serum directly onto the lashes or extensions themselves, as the product is designed to work at the lash root area.
No. The serum supports the natural lash growth cycle and does not cause sudden lash loss when discontinued. If you stop using it, lashes gradually return to their natural growth rhythm, without a rebound effect.
The serum is scientifically tested and its effectiveness has been confirmed in application studies. However, results may vary depending on consistency, correct use, and individual lash growth cycles.
If the serum is used as directed and you are not satisfied with the results, we offer a 90-day money-back guarantee, in accordance with our return policy.
Na podstawie opinii wiele użytkowniczek regularnie stosujących serum QUALASH wskazuje, że rzęsy stają się dłuższe, gęstsze i wyraźnie ciemniejsze. Zauważalne zmiany pojawiają się najczęściej między 3. a 8. tygodniem, choć część kobiet widzi różnicę już po około miesiącu. Klientki często zwracają uwagę na wygodną aplikację pędzelkiem, fakt, że opakowanie wystarcza na kilka miesięcy użytkowania, oraz potwierdzają przyspieszony odrost nowych rzęs po sztucznym przedłużaniu.
Recenzje pokazują, że tempo działania może różnić się w zależności od użytkowniczki. W pojedynczych przypadkach osoby o wysokiej wrażliwości zgłaszały przejściowy dyskomfort po aplikacji. W ogólnym odbiorze przeważają opinie pozytywne, a regularne użytkowniczki często wracają po kolejne opakowania i wysoko oceniają wygodę automatycznych dostaw w modelu subskrypcji.
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