Homepage/ All Sets and Kits/ Complex Peptide Lash Serum + Lengthening Mascara Set
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
  • Complex Peptide Lash Growth Serum + Lengthening Mascara Set - UKLASH
Save 40%

Complex Peptide Lash Serum + Lengthening Mascara Set

For longer, stronger & lengthened lashes

Complex Peptide Lash Serum + Lengthening Mascara Set

What it does

This powerful pair combines our record-breaking Complex Peptide Eyelash Serum which lengthens and strengthens your lashes, with our Lengthening Mascara which provides a dramatic and defined lash look that highlights your lash growth success.

Why it's special

Our Complex Peptide Eyelash Serum is powered by a record-breaking six peptides, whilst our Lengthening Mascara is specifically designed to lengthen, lift and showcase your hard-earned lash growth.

Benefits

Easy application - Combine one swipe of both the serum and mascara for the ultimate lash-lengthening boost!

Backed by science - Formulated by Biologists and approved by Dermatologists, Trichologists and Ophthalmologists

Nourishing formulas - Both are packed with nourishing ingredients to help fortify and strengthen the lashes

Conscious recipe - Vegan-friendly and free from parabens and oils; making them safe to use with lash extensions and contact lenses

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

Complex Peptide Eyelash Serum - 3ml / 0.10fl oz

Lengthening Mascara - 7g / 0.25oz

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.

Prostaglandin free

Peptide based

Clinically proven

To deliver real results

Dermatologist approved

Kind to your skin

Trichologist approved

Kind to your hair

Ophthalmologist approved

Kind to your eyes

Vegan friendly

Care for the planet

Eyelash Serum

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

2. Apply one stroke of the serum to your upper lash line with your eyes closed. 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

Top tips

- 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

Lengthening Mascara

1. Swipe the upper lashes from root to tip using the flexible silicone brush. For extra protection around the eye area, use our innovative lash guard to cover the eyelids

2. Apply additional coats of the buildable formula to separate and define the lashes, adding to the overall lengthening effect!

3. Apply to lower lashes if desired

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

Carnauba Wax

A natural conditioner that helps to lift, hold and add shine to lashes

Hydrolyzed Wheat Protein

Hydrates and strengthens the hair follicle reducing hair loss

Glycerin

Moisturises and conditions the hair cuticles, preventing lash loss and providing a long and lustrous look

Candelilla Wax

Offers a smooth application and a strong, lasting hold for lashes

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.

Lengthening Mascara

Aqua (Water), Glycerin, Propylene Glycol, Copernicia Cerifera Cera/Copernicia Cerifera (Carnauba) Wax, Euphorbia Cerifera Cera/Euphorbia Cerifera (Candelilla) Wax, Styrene/Acrylates Copolymer, Cera Microcristallina/Microcrystalline Wax, Synthetic Japan Wax, Polyvinyl Alcohol, Silica, Polyacrylic Acid, Lauric/Myristic/Palmitic/Stearic Glycerides, Polysorbate 80, Stearic Acid, Argilla/Magnesium Aluminum Silicate, Glyceryl Stearate, Xanthan Gum, Triethoxycaprylylsilane, Phenoxyethanol, Benzyl Alcohol, CI 77499 (Iron Oxides).

This product is not eligible for our money back guarantee

Faqs

Our Complex Peptide Eyelash Serum is the first of its kind - offering a record-breaking six peptides in its innovative formula. It’s best suited to those looking for longer, healthier and more nourished lashes.

This will depend on what point your lashes are in their cycle when you start to use the product. Some see longer lashes in as little as 25 days, but 12 weeks is when you should expect to see full results. Read more about lash cycles here.

Our Lengthening Mascara combines an innovative wand with a powerful formula to provide lifted and longer-looking lashes. Its ultra-black pigmented formula features Carnauba and Candelilla waxes for optimum curl and positioning, whilst the curved silicone wand is designed with ultra-fine bristles that help to individually comb, define and lift your lashes for an all-day hold.

It is packed with 99% naturally derived and 22% organic ingredients including Pea Peptides, Hyaluronic Acid, Hydrolyzed Wheat Protein, Hexapeptide-8 (Acetyl Hexapeptide-8) and Copper Tripeptide-1 amongst many more - all of which combine to moisturise, strengthen and stimulate lash and brows growth from the root.

As leaders in the Eyelash Growth Serum category, we want to make sure we’re catering to all customers in helping achieve longer and fuller-looking lashes. Our original Eyelash Serum was our first innovation, our Sensitive Eyelash Serum caters to those who are looking for a gentler approach to growth, and our new Complex Peptide Eyelash Serum pushes the boundaries by being an industry-first, packed with more peptides than any other serum on the market.

Trusted by Experts

“Using an eyelash serum can help to strengthen your natural lashes, keeping them long and strong and primed for growth ”

Dr. Raj Arora, GP & Medical Educator

“Long-term, aggressive plucking can weaken brow follicles. Go easy, try a UKBROW Eyebrow Serum to encourage growth”

Dr. Kemi Fabusiwa, GP & Medical Educator

“Use deep conditioner often and a shampoo with Piroctone Olamine to protect against dry scalp and hair loss.”

Kate Holden, Trichologist MIT

“Use the Hair Serum for post-sun smoothing, and the Lash Serum to keep lashes strong if you’re skipping mascara.”

Dr. Pyal, GP and Dermatologist

4.5
Rated 4.5 out of 5 stars
Based on 441 reviews
Reviews Summary
Customers say this eyelash serum makes their lashes longer, thicker, and stronger over time. Many report noticeable improvements within weeks, with some achieving lashes so full they no longer need mascara. Users appreciate that it helps restore damaged lashes after extensions or aging. While most find it gentler than the original formula, some note it works more slowly. Common feedback includes improved lash condition and thickness, though a few customers experienced no results or mild irritation. Many prefer the original version for faster, more dramatic length gains.
Slide 1 selected
441 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
    4 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

  • 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
    9 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

  • 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
    11 months 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

  • 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

  • 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

Your bag (0)
Your bag is empty
Your free gift