Three went back. One made me stop wearing mascara.
Best by Lauren may earn a commission when you shop through certain links. Every product here was bought with my own money or tested for at least six weeks. No brand has paid to be included, and nothing is ranked higher because it pays more.
I tested four lash serums at once, which is a slightly ridiculous thing to do but the only way to compare them honestly across the same six weeks.
One of them worked well enough that people noticed before I said anything. The other three went back.
I have tried four of these and returned three. This is the one where the before-and-after was obvious enough that people noticed before I mentioned it. Six weeks of nightly use, and now I keep one in every bag.
The results are not permanent. Stop using it and your lashes return to their baseline over about eight weeks, which makes this an ongoing cost rather than a one-time purchase — worth knowing before you start.
Some serums cause a darkening of the lash line or, rarely, a change in iris pigment. The prostaglandin-analogue ones are the ones to read carefully about. If you have any eye condition at all, this is a genuine "ask your doctor" rather than a disclaimer.
Four weeks before anything is visible in a photograph, six before anyone comments. I kept weekly pictures and the change between week two and week five is the whole story.
No. Lashes return to baseline roughly eight weeks after you stop. Budget for it as a subscription, not a purchase.
Mostly, but read the active ingredient. Prostaglandin analogues can darken the lash line and, rarely, affect iris pigment. If you have any eye condition, ask a doctor rather than the internet.
