15% Off Sitewide*
Woman with straight dark hair holding a frosted dropper bottle labeled ‘UKHAIR Hair Growth Serum’.
Subscribe & save
Homepage/ All Sets and Kits/ Complex Peptide Lash Serum + Eyebrow Serum Set
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
  • Complex Peptide Lash Growth Serum + Eyebrow Serum Set - UKLASH
Selling fast
Save 25%
687 reviews

Complex Peptide Lash Serum + Eyebrow Serum Set

Our powerful Compl-hex™ Peptide Blend formula for lashes and brows

Complex Peptide Lash Serum + Eyebrow Serum Set

Enter your details below to be notified when this item is back in stock.

What it does

Our Complex Peptide Eyelash and Eyebrow Serum is one of the most sophisticated peptide-based serums on the market, offering a well-curated blend of six peptides which help to provide longer-looking lashes and fuller-looking brows.

Why it's special

We've created a world-first Compl-hex™ Peptide Blend including six active peptides, all of which help to stimulate lashes and brows from the root. It promotes collagen and elastin production in the hair follicle to result in longer-looking lashes and fuller-looking brows.

Benefits

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

Easy application - Apply in less than 5 seconds

Clinically tested - Clinically proven results. Approved by dermatologists, ophthalmologists and trichologists

Kind recipe - The vegan-friendly and cruelty-free 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 (each)

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

Vegan friendly

Care for the planet

Ophthalmologist approved

Kind to your eyes

Trichologist approved

Kind to your hair

Dermatologist approved

Kind to your skin

Complex Peptide Eyelash Serum

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

2. Apply one stroke of the serum to your upper lash line with your eye closed, working from the inner corner outwards. One dip is sufficient for both eyes

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

WARNINGS: PATCH TEST BEFORE USE BY APPLYING A SMALL AMOUNT OF SERUM TO CLEAN DRY, SKIN BEHIND YOUR EAR. WAIT 24 HOURS TO CHECK FOR SENSITIVITY. IF IRRITATION OR REDNESS OCCURS, STOP USE AND TRY AGAIN AFTER A FEW DAYS. DISCONTINUE USE IF IRRITATION/ ALLERGIC REACTION PERSISTS. IF THE SERUM GETS INTO YOUR EYES, RINSE WITH WATER. FOR EXTERNAL USE ONLY. KEEP OUT OF REACH OF CHILDREN. IF PREGNANT, NURSING, OR HAVE A MEDICAL CONDITION, CONSULT YOUR MEDICAL HEALTHCARE PROVIDER BEFORE USE.

Complex Peptide Eyebrow Serum

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

2. Apply one stroke of the serum to your entire brow. One dip is sufficient for both brows

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

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

Complex Peptide Eyelash Serum

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.

Complex Peptide Eyebrow Serum

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 product is eligible for our money back guarantee

Tried and tested by you
FAQs

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.

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.

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, a good quality eyebrow serum, such as the UKBROW Complex Peptide Eyebrow Serum, can help with overplucked brows, but it depends on the hair follicle.
If the follicle is still active, consistent use of an eyebrow serum can help support the natural growth cycle, encouraging brows to look fuller and healthier over time. However, if an area has been overplucked repeatedly for many years and the follicle is no longer active, regrowth may be limited. In these cases, a serum can still help improve the condition and appearance of existing brow hairs, even if complete regrowth isn’t possible.

4.4
Rated 4.4 out of 5 stars
Based on 687 reviews
Reviews Summary
Customers say this serum delivers noticeably longer and thicker lashes and brows with consistent use. Many report visible results within weeks to a few months, with friends and professionals commenting on their improved appearance. The formula applies easily and feels lightweight on the lash line. Common feedback notes that patience and daily application are essential for best results. Some users experience no change despite consistent use, while a few report early irritation that resolved over time. Most long-term users become repeat purchasers, praising the product's effectiveness and value.
687 reviews
  • Elizabeth P.
    Verified Buyer
    Reviewing
    Complex Peptide Lash Growth Serum + Eyebrow Serum Set
    I recommend this product
    Age Range 65+
    What was your concern? Sparse lashes, Lash loss from hormonal changes (incl postpartum)
    How long have you been using the product? 150 days (5 months) or more
    What improvements have you noticed? Longer lashes, Fuller lashes, More Volume
    How long have you been using this bundle? 5 months +
    Rated 5 out of 5 stars
    22 seconds ago
    It really works!

    I have been using Complex Peptide Lash /Brow for several years. It really works. No irritation or dryness as some other products do. Consistence is key.

    Was this helpful?
  • Mrs C. B.
    Verified Buyer
    Reviewing
    Complex Peptide Lash Growth Serum
    I recommend this product
    Age Range 55 - 64
    What was your concern? Damaged lashes (extensions/ lash lifts)
    How long have you been using the product? 150 days (5 months) or more
    What improvements have you noticed? Longer lashes, Fuller lashes, Stronger lashes
    Rated 4 out of 5 stars
    Yesterday
    Best Serum

    Great lash serum, gentle and super effective. Lashes longer and stronger

    Was this helpful?
  • Carole S.
    Verified Buyer
    Reviewing
    Complex Peptide Eyebrow Growth Serum
    I recommend this product
    Age Range 65+
    What was your concern? Over plucked brows
    How long have you been using the product? 150 days (5 months) or more, 30 days (1 month)
    What improvements have you noticed? Fuller brows, Improved density, Stronger brow hairs, Less shedding
    Rated 4 out of 5 stars
    3 days ago
    Eyebrow growth serum

    Excellent product. Have noticed more volume in my eyebrows after only a few weeks . I use this every evening. Easy application, does the job it says , and easy to take away with you.

    Was this helpful?
  • Dmitri K.
    Verified Buyer
    Reviewing
    Complex Peptide Lash Growth Serum
    I recommend this product
    What was your concern? Short lashes, Damaged lashes (extensions/ lash lifts)
    How long have you been using the product? 60 days (2 months)
    What improvements have you noticed? Longer lashes, Fuller lashes, Stronger lashes
    Rated 5 out of 5 stars
    4 days ago
    Lash growth serum

    Great product. Noticeable results

    Was this helpful?
  • Yvette M.
    Verified Buyer
    Reviewing
    Complex Peptide Lash Growth Serum
    I recommend this product
    Age Range 55 - 64
    What was your concern? Short 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? Fuller lashes, Stronger lashes, More Volume, More Curl
    Rated 5 out of 5 stars
    5 days ago
    Great product

    WORKS!

    Was this helpful?
Your bag (0)
Your bag is empty
Your free gift
UKLASH brand logo in black text on a light off-white circular background.
Find out more