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Homepage/ Lashes/ Complex Peptide Lash Growth Serum
  • Complex Peptide Lash Growth Serum - UKLASH
  • Complex Peptide Lash Growth Serum - UKLASH
  • Complex Peptide Lash Growth Serum - UKLASH
  • Complex Peptide Lash Growth Serum - UKLASH
  • Complex Peptide Lash Growth Serum - UKLASH
  • Complex Peptide Lash Growth Serum - UKLASH
  • Complex Peptide Lash Growth Serum - UKLASH
Prostaglandin-Free
419 reviews

Complex Peptide Lash Growth Serum

For stronger and longer lashes

Complex Peptide Lash Growth Serum

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What it does

Our prostaglandin-free Complex Peptide Eyelash Serum is powered by a record-breaking six peptides - more than any other lash serum on the market, which help to lengthen and strengthen your lashes.

Why it's special

It includes more peptides than any other lash serum on the market. Pea Peptides, Hexapeptide-8, and Copper Tripeptide-1 all help to stimulate growth from the root and promote collagen and elastin in the hair follicle, resulting in longer and stronger long-term lash growth.

Benefits

World first - The world's first eyelash serum to be powered by a record-breaking six peptides

Easy application - Apply in less than 5 seconds

Clinically tested - Approved by dermatologists, ophthalmologists and trichologists

Kind recipe - The vegan-friendly recipe is derived from 99% natural and 22% organic ingredients

Money-back guarantee - In the unlikely event that you are unhappy with the results after 12 weeks of use, we will give your money back

3ml / 0.10fl oz

Weeks 1–4: Nourishment Begins
The lashes begin to feel nourished and conditioned as the serum strengthens the lash roots, stimulating growth and making them less prone to breakage.

Weeks 4–6: Visible Changes
The lashes start to look longer, healthier and fuller whilst the serum continues to nourish and condition the lashes at the root.

Weeks 6–8: Noticeable Growth
The lashes appear longer and stronger, showing a clear improvement in both volume and length, while the serum continues to nourish and support the lashes entering the growth phase.

Weeks 8–12: Full Results
Full results are achieved with lashes that are healthier, thicker, longer looking, and nourished, as the serum worked to stimulate growth. To maintain these results, use 3–4 times per week.

World first

Record-breaking 6 peptides

Prostaglandin free

Peptide based

Ophthalmologist approved

Kind to your eyes

Trichologist approved

Kind to your hair

Dermatologist approved

Kind to your skin

Vegan friendly

Care for the planet

Oil-free

1. Remove makeup with an oil-free remover or cleanser.

2. Apply one stroke of the serum only to your upper lash line (like an eyeliner). One dip is sufficient for both eyes.

Using more than instructed will not give you better results and might increase sensitivity: Don't do multiple applications or double dips. Don’t apply it on the lower lash line (the serum will be transferred to your lower lashes when you blink).

3. For best results, apply in the PM and allow the serum to work overnight. If applying in the AM - make sure the serum has fully dried before following with your makeup routine

How often?

  • First 12 weeks: Every day
  • After 12 weeks: 3-4 times per week (every other day)

Important

  • Avoid direct contact with the eyes
  • Do not use if you are pregnant, nursing or under 18
  • Keep out of reach of children
  • Patch testing is recommended and if redness or irritation occurs, discontinue use
  • If you have any preexisting conditions, consult your doctor before use
  • For more information, please read the box insert
Compl-hex™ Peptide Blend

(Pea Peptides, Palmitoyl Tetrapeptide-7, Palmitoyl Oligopeptide, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Hexapeptide-8 and Copper Tripeptide-1) - Our unique anti-inflammatory blend of 6 peptides helps to support lash resilience and reduce breakage for the appearance of thicker, fuller lashes.

Hyaluronic Acid

A well-known source of hydration for hair, it also delivers key nutrients to the follicles and roots to promote healthy lash growth

Hydrolyzed Wheat Protein

Hydrates and strengthens the hair follicle reducing hair loss

Aqua, Citrus Limon (Lemon) Fruit Water, Propanediol, Pisum Sativum (Pea) Peptide, Cocodimonium Hydroxypropyl Hydrolyzed Wheat Protein, Butylene Glycol, Hyaluronic Acid, Curcuma Longa (Turmeric) Callus Conditioned Media, Caprylyl Glycol, Acetyl Hexapeptide-8, Pentylene Glycol, Phytic Acid, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Copper Tripeptide-1, 1,2-Hexanediol, Glycerin, Carbomer, Polysorbate 20, Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide-7, Centella Asiatica Extract, Polygonum Cuspidatum Root Extract, Scutellaria Baicalensis Root Extract, Camellia Sinensis Leaf Extract, Glycyrrhiza Glabra (Licorice) Root Extract, Chamomilla Recutita (Matricaria) Flower Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Isochrysis Galbana Extract, Phenoxyethanol, Xanthan Gum, Ethylhexylglycerin.

This serum is Prostaglandin-free.

This product is eligible for our money back guarantee

Tried and tested by you
FAQs

Yes, when used consistently, a quality eyelash serum, such as the UKLASH Complex Peptide Eyelash Serum, can help improve the appearance of lash length, fullness and strength. UKLASH Complex Peptide Eyelash Serum conditions the lash line with a lightweight formula that supports healthier-looking lashes in as little as four to six weeks. It is a simple step that helps your lashes look bolder and fuller over time.

Most people start to see noticeable results with our Complex Peptide Lash Serum in around six to eight weeks of consistent daily use, with fuller-looking lashes continuing to develop up to 12 weeks. The serum works alongside your natural lash cycle, so it depends at what point in the cycle you began to apply the serum as to how quickly you'll see results. To learn more about the lash growth cycle, head to our article here.

Peptides are short chains of amino acids, which are the building blocks of proteins like Keratin, which makes up around 80-85% of your natural lashes. In lash serums, peptides help support your natural lashes by conditioning them and reinforcing the lash structure over time, working in harmony with the natural growth cycle to achieve longer, fuller and healthier-looking lashes. To read more about what peptides do for lashes, head to our article here.

Peptides help support stronger, healthier-looking skin, lashes and brows by reinforcing the proteins that give them structure and resilience. On skin, they help improve the appearance of firmness and smoothness, while on lashes and brows they condition, strengthen and support natural growth for fuller, more defined-looking results over time. To read more about what peptides are, head to our article here.

Yes, you can absolutely use an eyelash serum with lash extensions. In fact, UKLASH Eyelash Serum has become a favourite among lash techs because it helps support healthier, stronger natural lashes while maintaining your extensions. When your own lashes stay conditioned and resilient, extensions can sit better and last longer. If you want to learn why lash experts love pairing serums with extensions, you can read more in our blog here.

4.5
Rated 4.5 out of 5 stars
Based on 419 reviews
Reviews Summary
Customers say this lash serum makes their eyelashes longer, thicker, and stronger with consistent nightly use. Many report noticeable improvements within weeks, with fuller, more conditioned lashes that often eliminate the need for mascara. Users appreciate that it helps restore lashes damaged by extensions or aging. Several customers mention it's gentler on sensitive eyes compared to other formulas. Some users find the original version more effective than this peptide formula, while others prefer its milder approach. A few customers experienced no results or eye irritation. Most reviews praise the serum's effectiveness for achieving naturally enhanced lashes.
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419 reviews
  • Davinia
    Reviewing
    Complex Peptide Lash Growth Serum
    I recommend this product
    Age Range 45 - 54
    What was your concern? Damaged lashes (extensions/ lash lifts)
    How long have you been using the product? 90 days (3 months)
    What improvements have you noticed? Longer lashes, Nourished and hydrated lashes, Stronger lashes
    Rated 5 out of 5 stars
    6 months ago
    Fixed my damaged lashes

    My lashes got damaged by a lash lift and this repaired and lengthened my lashes perfectly. I'm 47 years old and my lashes are the best they have ever been

    Was this helpful?
  • Gabrielle D.
    Verified Buyer
    Reviewing
    Complex Peptide Lash Growth Serum
    I recommend this product
    Age Range 25 - 34
    What was your concern? Sparse lashes
    How long have you been using the product? 150 days (5 months) or more
    What improvements have you noticed? Longer lashes, More Volume, Fuller lashes, Stronger lashes
    Rated 5 out of 5 stars
    11 months ago
    Love It!

    I feel like this is an upgrade from the OG UKLash serum, it doesn’t leave dark circles or dark lines on your eyelids so I’m obsessed. Works super well slightly thicker formula. 10/10

    Was this helpful?
  • Patricia L.
    Verified Buyer
    Reviewing
    Complex Peptide Lash Growth Serum
    I recommend this product
    Age Range 45 - 54
    What was your concern? Short lashes, Sparse lashes
    How long have you been using the product? 60 days (2 months)
    What improvements have you noticed? Longer lashes, Fuller lashes, More Volume
    Rated 5 out of 5 stars
    1 year ago
    Amazing

    I hadn’t worn makeup in years as I had literally about 10 single lashes . Then after a few months of the serum , the cold yeast was massive for me and feel more confident and wanted to wear make bit more. I recommend to everyone I know

    Was this helpful?
  • Julianne A.
    Verified Buyer
    Reviewing
    Complex Peptide Lash Growth Serum
    Age Range 55 - 64
    What was your concern? Short lashes
    How long have you been using the product? 150 days (5 months) or more
    Rated 3 out of 5 stars
    1 year ago
    Not working any more!

    I’ve used uk lash for years and have loved my spectacularly long lashes my pride and joy until it stopped working. I changed to the newer complex peptide to see if it would help and have been using it since it became available with a small improvement but my lashes are still struggling

    Was this helpful?
  • linda c.
    Verified Buyer
    Reviewing
    Complex Peptide Lash Growth Serum
    I recommend this product
    Age Range 55 - 64
    What was your concern? Short lashes, Sparse lashes, Lash loss from hormonal changes (incl postpartum)
    How long have you been using the product? 60 days (2 months)
    What improvements have you noticed? Longer lashes, Fuller lashes
    Rated 5 out of 5 stars
    1 year ago
    Super lash serum

    Seen a difference in the length and strength of my lashes

    Was this helpful?
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