Lazru Serum review what it can do for lashes and brows.

What

Lash and brow serum, 3.5 ml tube with brush applicator

Who it’s for

Short, thin or sparse lashes; patchy or over-plucked brows

Key ingredients

Procapil™ and AnaGain™, plus caffeine, ginseng, nettle, biotin, hyaluronic acid and niacinamide

Free from

Prostaglandin analogues and hormones – the full ingredient list is public

How to use

Once or twice a day along the lash line and through the brows

Tolerance

Dermatest® rates skin tolerance as “very good” (06/2022)

Company

Lazru Cosmetics Trading L.L.C. (according to its legal notice)

Where to buy

From the brand’s own shop: [lazru.com](https://lazru.com/en/

What is Lazru?

Lazru is a single product: a conditioning serum you sweep along the base of your lashes like a fine line of eyeliner – and through your brows with the same brush. Two areas, one tube. It’s more practical than it sounds: people with thin lashes are rarely completely happy with their brows either.

The real difference is in what’s missing. Many well-known lash serums work with prostaglandin analogues – actives that come from glaucoma eye drops. Lazru leaves them out and relies on peptides and plant extracts instead. What that means, you’ll find further down.

What’s inside – and what the studies show

At its core are two actives on which the raw-material manufacturers have published studies. One point matters for reading them: each study tested the individual active on scalp hair – not on lashes or brows, and not the finished Lazru serum. That’s standard in cosmetics, but we’d rather say it openly.

Add to that caffeine, ginseng, nettle, biotin, hyaluronic acid, niacinamide and several essential oils. The full ingredient list is on lazru.com – so you can check for yourself what you’re applying near your eyes every day.

Why “prostaglandin-free” matters

Prostaglandin analogues often make lashes grow dramatically – as a side effect of a glaucoma drug. That’s exactly why they’re under fire: in 2026 the EU’s scientific committee SCCS judged three of these substances unsafe in cosmetics, and the European Commission proposed a ban. The same year, the German state testing laboratory CVUA Karlsruhe found more than half of 71 specifically tested lash and brow serums unsafe, and Germany’s consumer testing organisation Stiftung Warentest advises pregnant women and those trying to conceive against them.

To be honest: Lazru doesn’t promise to work harder than a prostaglandin serum. It’s the gentler choice – for anyone who wants to care for their lashes and brows without exposing their eyes to this class of actives. On the packaging of other serums, you’ll recognise prostaglandin analogues by names such as Isopropyl Cloprostenate, Ethyl Tafluprostamide or Norbimatoprost.

How to use Lazru

Our experience in the salon

We’re asked about lash serums in the salon all the time – often by clients whose lashes have thinned after years of extensions or curlers, or whose brows no longer grow back properly after plucking. Our team has used and tested Lazru in the salon ourselves. One product for both areas, no prostaglandins and a fully published ingredient list: that’s why we recommend it.

“The results are genuinely impressive! Lazru is the only lash and brow serum I recommend to my clients.”

Ebru M., celebrity stylist at ARBUTI

It helps to stay realistic: no serum works the same for everyone. The manufacturer mentions first changes after a few weeks and clearer ones after two to four months. Stop after two weeks and you can’t judge anything yet.

What’s proven – and what isn’t

• Proven: the ingredient list is public and contains neither prostaglandin analogues nor hormones.
• Proven: in June 2022, Dermatest® rated skin tolerance as “very good”. That’s a tolerance test, not proof of effectiveness.
• Studied, but not on lashes: Procapil™ and AnaGain™ – the manufacturers’ studies concern scalp hair.
• Not published: a study with the finished Lazru serum. The brand’s before-and-after photos come without details on the person or how long it was used.

Who Lazru suits – and who it doesn’t

• A good fit if your lashes are short, thin or brittle – including after extensions or a lash lift.
• A good fit if your brows are patchy or over-plucked and you want to care for them, not just fill them in.
• A good fit if you’re deliberately looking for a serum without prostaglandin analogues and hormones.
• Less suitable if you need a visible result within days – lash extensions or mascara will get you there faster.
• See a doctor first if your lashes or brows fall out suddenly or in patches. If you’re pregnant or breastfeeding, ask before using it.

Lazru compared

You’ll find the full comparison of ten well-known serums in Which eyelash serum really works?. If your brows are your main concern, read our eyebrow serum comparison. For a broader overview, see our eyelash serum top picks.

Our verdict

1

Our test winner

Lazru Serum

Lashes and brows with one product, two studied actives, zero prostaglandins: Lazru is the smartest choice for a stronger look without putting your eyes through anything. Start today – in two to three months you’ll see why we recommend it. Prices and delivery on lazru.com.

What we like

• No prostaglandin analogues, no hormones
• One product for lashes and brows
• Full ingredient list published
• Skin tolerance “very good” according to Dermatest®

Keep in mind

• Ingredient studies on scalp hair, not lashes
• Needs daily use and patience

Visit Lazru

We’re stylists, not doctors. Information from Lazru, the ingredient manufacturers and Dermatest®, as of October 2026. We’ve used Lazru ourselves in the salon; the other products are compared on the basis of manufacturer and retailer information. Cosmetics are not medicines; results vary from person to person.