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How does Feelfi lash serum work?

The science behind longer, fuller, & healthier-looking lashes.

Feelfi Lash Serum is a prostaglandin-free lash serum designed to support the appearance of longer, fuller and healthier-looking natural lashes.

Its formula combines a four-peptide complex with biotin, caffeine, panthenol and hydrating ingredients, including sodium hyaluronate.

And using it couldn't be simpler.

One swipe. Once a day. Consistently.

Because when it comes to lash serum, consistency matters.

How does lash serum work?

Lash serums are designed to support and condition your natural lashes while they move through their normal lash cycle.

Your eyelashes don't all grow at the same time. Each individual lash is at a different stage of its natural cycle of growth, transition, rest and shedding.

Research into the human eyelash cycle has estimated that the active growth stage, known as the anagen phase, lasts approximately 34 days on average, with the complete eyelash cycle lasting around 90 days.

That's why lash serum isn't an overnight thing.

And why using it consistently matters.

The active stage

The active growth phase, when your lash is growing from the follicle. Only some lashes are in anagen at any one time, as every lash follows its own cycle.

The Transition Phase

Growth stops and the follicle begins to shrink. The lash stays in place as it moves from active growth into its resting phase.

The Resting Phase

Finally, there's telogen aka the resting phase. Your lash stays in place while the follicle rests and prepares for the next cycle. Eventually, the old lash naturally sheds and a new cycle begins.

How does Feelfi Lash Serum work?

Feelfi Lash Serum takes a prostaglandin-free approach to lash care.

Instead of prostaglandins or prostaglandin analogues, Feelfi Lash Serum combines a carefully selected blend of peptides and conditioning ingredients to support the appearance and condition of your natural lashes.

The result?

Lashes that look longer, fuller and healthier over time.

Multi-Peptide Complex

Peptides are short chains of amino acids and have become an increasingly popular ingredient in prostaglandin-free lash serums.

Feelfi Lash Serum contains four:

  1. Biotinoyl Tripeptide-1
  2. Myristoyl Pentapeptide-17
  3. Myristoyl Hexapeptide-16
  4. Myristoyl Tetrapeptide-12

Together, they form the Feelfi Multi-Peptide Complex.

Research into non-prostaglandin lash serum ingredients is still developing, but peptides are one of the ingredient groups being studied for their potential role in supporting the appearance of eyelashes.

Prostaglandin-Free

No prostaglandin analogues. Just a carefully considered formula designed for daily use.

Biotin

Biotin is commonly found in hair and beauty formulations and forms part of the Feelfi Lash Serum formula to support strong, healthy-looking natural lashes.

Caffeine

Not just for your morning coffee.

Caffeine is another carefully selected ingredient in Feelfi Lash Serum and forms part of our formula designed to support fuller, healthier-looking natural lashes.

Panthenol

Panthenol helps condition and hydrate the lashes, supporting a softer, healthier-looking appearance.

Sodium Hyaluronate

Sodium hyaluronate is a form of hyaluronic acid known for its hydrating properties. It's included in Feelfi Lash Serum to provide hydration and conditioning as part of the overall formula.

Why do you need to use lash serum every day?

Consistency gives your lash serum the best chance to become part of a routine that supports your lashes throughout their natural cycle.

Remember: your lashes aren't all doing the same thing at the same time.

Some are actively growing. Some are resting. Others are preparing to shed naturally.

That's why applying lash serum occasionally isn't the same as using it consistently.

With Feelfi Lash Serum, you only need:

One swipe. Once a day.

Applying more product won't make your lashes transform faster.

So don't waste the serum.

Make the swipe part of something you already do every day and stick with it.

How long does Feelfi Lash Serum take to work?

Some people may start noticing the first signs after around 2–4 weeks, with more noticeable results developing around weeks 4–6.

For the full Feelfi transformation, we recommend consistent daily use for 8–12 weeks.

Everyone's lashes are different, so exact results and timings will vary.

weeks 0 - 2
you're just getting started
Take a clear, makeup-free photo of your natural lashes before your first application.You'll want it later.
weeks 2-4
the first signs may start appearing
You might notice subtle changes in how your lashes look, particularly when you're applying mascara.
weeks 4-6
this is when changes may start becoming easier to spot
Longer-looking. Fuller-looking. Healthier-looking. If you're not seeing a big difference yet, keep going. Your lashes are all moving through their natural cycle at different times.
weeks 8-12
now compare those photos
This is the period when we'd expect you to be able to properly assess your Feelfi results after consistent use. Same lashes. Different camera roll.

Why haven't I seen results from my lash serum yet?

If you've been using Feelfi Lash Serum for a few weeks and your results still feel subtle, don't stop now.

Four weeks is still early.

The first thing to ask yourself is:

Have I actually been using it every day?

If the answer is mostly, now's the time to make it part of your daily routine.

Keep your Feelfi Lash Serum somewhere you'll see it. Add it to your evening skincare routine. Put it next to your toothbrush.

One swipe takes seconds.

Then give it the full 8–12 weeks.