Lead Reviewer & Board-Certified Dermatologist
Dr. Elena Marsh
- MD, Dermatology — Northwestern University
- Board-certified by the American Board of Dermatology
- Member, American Academy of Dermatology (AAD)
- 12+ years treating lash & brow conditions
I started Lash Serum Lab because the lash-serum aisle is full of bold claims and short on evidence. Patients regularly asked me which products actually work, which ingredients are worth paying for, and whether the prescription option was necessary for them.
My goal here is simple: test every serum the same way, report what I see, and explain the science in plain English so you can make an informed choice. I review ingredient lists line by line, track real results over an 8–12 week cycle, and flag any safety considerations — particularly around prostaglandin analogs, which can cause side effects that shoppers deserve to understand before they buy.
Nothing on this site is a substitute for a consultation with your own physician. If you have a history of eye conditions, are pregnant, or wear contact lenses, please talk to a professional before starting any serum.
Reviews by Dr. Elena Marsh
- GrandeLASH-MD Lash Enhancing Serum — GrandeLASH-MD is the highest-rated serum in our ranking for raw results and popularity — but it uses a prostaglandin analog. Here's who it's for and who should choose differently.
- RevitaLash Advanced Eyelash Conditioner — RevitaLash Advanced is a physician-developed lash conditioner beloved by lash pros — but it's pricey and uses a prostaglandin analog. Our honest review.
- Toplash Lash & Brow Serum — Toplash is our best-value pick and what we'd recommend to most shoppers — prostaglandin-free, EU-certified, and a fraction of the price of the top-ranked serums. Our full hands-on review.
- Vegamour GRO Lash Serum — Vegamour GRO is a vegan, prostaglandin-free lash serum built on plant actives. It's a clean-beauty favorite — here's how it actually performs and who it's for.
- Babe Lash Essential Serum — Babe Lash Essential is a best-selling lash serum popular with extension wearers. It works — but it relies on a prostaglandin analog. Our full review.