Precision Lash Growth Serum

£39.00

£29.25

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Precision Lash Growth Serum

Name: Precision Lash Growth Serum
Brand: Line Theory
SKU: 112
Price: 29.25 GBP
Availability: InStock

Targeted, prostaglandin-free lash care powered by PACT-17® peptides to help lashes look fuller, feel softer and appear more defined with consistent nightly use.

One 3ml tube provides a complete 12-week course.

Covered by our 3-Month Moneyback Guarantee

£39.00

£29.25

Prostaglandin-free lash care for a gentler daily routine.

Lashes can gradually become shorter, finer or less defined over time. Precision Lash Growth Serum offers targeted, prostaglandin-free care for a considered nightly routine.

Powered by PACT-17® peptides, the formula helps condition the lashes and supports the appearance of a fuller, more defined lash line with consistent use. It is created for customers who prefer to avoid prostaglandin analogues while maintaining a precise, performance-led approach to lash care.

Description

Prostaglandin-free lash care for a gentler daily routine.

Lashes can gradually become shorter, finer or less defined over time. Precision Lash Growth Serum offers targeted, prostaglandin-free care for a considered nightly routine.

4.8 ★ rating
1,261 verified reviews
78% longer-looking lashes
82% fuller-looking lashes
93% healthier-looking lashes
3-Month Moneyback Guarantee
Works with contact lenses / lash extensions

How to Use

Apply once each evening to clean, dry skin. Using the precision applicator, draw a fine line along the upper lash line, as you would eyeliner. Allow the serum to dry before applying other products. Avoid direct contact with the eyes and use only as directed.

What to Expect

Weeks 1–2: Softer, Fuller-Looking Lashes

Your lashes may start to feel softer, more conditioned, and appear slightly fuller as the serum helps nourish and support lash health.

Weeks 3–4: A Visible Increase in Length

With continued use, your lashes may begin to look longer and more defined, giving your natural lash line a more enhanced appearance.

Weeks 4–6: Longer, Smoother-Looking Lashes

By this stage, lashes may appear smoother, more polished, and noticeably longer-looking, especially when used consistently as part of your routine.

Weeks 6–8: Fuller, Longer-Looking Lashes

This is when many users begin to see the fuller, longer-looking lashes they’ve been dreaming of. Your natural lashes may appear more dramatic, healthy, and beautifully enhanced.

When will I start seeing results?

Results develop gradually and vary from person to person. Some customers may first notice that their lashes feel softer or look better conditioned before seeing a change in visible length or fullness. Use Precision consistently for the full recommended period before assessing your result.

How often should I use it?

For best results, apply the lash serum consistently as directed, evening is best. Daily use is key to achieving and maintaining visible results.

Important: Individual results may vary. Consistency is essential for best results

What happens if I stop using it?

To maintain your fuller, longer-looking lash appearance, continued use is recommended. Once you stop, your lashes will gradually return to their natural cycle over time.

3-Month Moneyback Guarantee

Yes, this product is eligible for our 3-Month Money-back Guarantee. Learn more here.
First-order eligibility, photo requirements, claim periods and other terms apply.

1,261 Reviews

Precision Lash Growth Serum

£39.00

£29.25

Precision Lash Growth Serum

£39.00

£29.25

Precision Lash Growth Serum

£39.00

£29.25

Precision Lash Growth Serum

£39.00

£29.25

Verified experiences with Precision Lash Growth Serum

"Lashes definitely look healthier, stronger, and more like they used to!"

I’m 66 and I started noticing that my lashes were changing in the same way my hair was changing — they looked finer, weaker, and less noticeable than they used to. I used to have naturally dark, defined lashes, but over the last couple of years they seemed to lose density, especially in the middle of my lash line.

The precision brush also makes it easy to apply neatly along the lash line, which helped me stay consistent. Now my lashes look more noticeable, and mascara gives me a much better result than it used to.

Nyota U.

Age: 65-74

Issue: Short Lashes

“Conditioned, natural-looking lashes.”

For me, this serum works because it helps my lashes look better cared for, rather than just temporarily coated. The formula feels like it supports lash condition, which is important when lashes start looking finer and more fragile with age. After consistent use, my lashes looked more defined at the root and less delicate at the ends. They also appeared fuller when I brushed mascara through them. I wouldn’t describe the change as overnight or artificial-looking, but my lashes definitely look healthier, stronger, and more like they used to.

Philippa T.

Age:55-64

Issue: Lash thickness

“My lashes look stronger and more present”

Over time, my lashes became so pale and delicate that they almost disappeared unless I wore mascara. I didn’t want anything that looked fake or dramatic; I just wanted my lashes to look a bit stronger and more visible again.

The improvement was subtle at first, but after regular use, my lashes looked healthier and more present. It gave my eyes a softer, more lifted look without needing heavy makeup.

Miranda W.

Age: 45-54

Issue: Disappearing Lashes

“Beautiful lashes in such a short time!”

I’m 61 and my lashes have become much finer with age. They were never extremely long, but they used to frame my eyes nicely. Over time, they became so pale and delicate that they almost disappeared unless I wore mascara. Precision Lash Serum appealed to me because it felt like a simple step I could add to my evening routine.

It improves the overall condition and appearance of the lashes. My lashes felt less dry, looked a little more defined, and seemed easier to coat with mascara. I especially noticed that the shorter lashes near the inner corners looked more even over time.

Tilda R.

Age: 55-64

Issue: Thin Lashes

“My lashes look like they belong to me again.”

“I didn’t realise how much I missed my lashes.”

“Mascara doesn’t just disappear anymore.”

“My eyes look more awake, even without makeup.”

“I stopped feeling like my lashes had vanished.”

“They look fuller, but still natural.”

“I finally have something to put mascara on.”

“My lashes look healthier than they have in years.”

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