10 Best Lash Serum in The UK

Last updated on 04/07/2025

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UKLASH Eyelash Growth Serum For Longer & Fuller Lashes - 3ml. Clinically Proven Formula for Naturally Longer Lashes and Extensions. Vegan & Cruelty-Free

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Why We Love It

Award-winning for visible results.
Easy and quick application.
Clinically tested and approved.

Main Highlights

Multi award winning UKLASH eyelash serum for longer, fuller and healthier eyelashes
Infused with a blend of vitamins, peptides and extracts. Key ingredients like Biotin Peptide, Vitamin B5, Myristoyl Pentapeptide-17 & Green Tea Extract
Simple and easy application - takes less than 5 seconds
Cruelty-free, Vegan, Paraben & fragrance free
Clinically tested. Approved by dermatologists and ophthalmologists

Grande Cosmetics GrandeLASH-MD Lash Enhancing Serum - Award-Winning Formula for Longer, Thicker-Looking Lashes - 4 ml

31% Off

Why We Love It

Promotes longer, thicker eyelashes.
Cruelty-free for guilt-free beauty.
Lasts six months per supply.

Main Highlights

Precision Application: Our soft, comfortable precision brush is optimised for the lash line, ensuring easy application with just one swipe a day for undeniable results
Clinically-Proven Formula: Experience the power of our proprietary lash complex, designed to promote the appearance of longer, thicker, healthier looking lashes in just 4-6 weeks, based on a 12 week consumer study with 30 subjects. Results will vary
Versatile Compatibility: Safe for use with lash extensions and contact lenses, this serum dries clear and won't flake, making it a seamless addition to your beauty routine
Ethical Beauty Choice: Enjoy a paraben-free formula that is not tested on animals, aligning with your values for cruelty-free and conscious beauty products
Empowering Beauty Revolution: Grande is on a mission to transform your natural features with real beauty enhancers, offering proven performance and instant and long-term benefits for obvious, skeptic-proof results

RapidLash Eyelash Enhancing Growth Serum for Longer, Thicker Lashes, 3 ml (Pack of 1)

33% OffFree Shipping

Why We Love It

Longer, fuller, healthier lashes.
Natural growth enhancement.
Easy, targeted application.

Main Highlights

HIGH-PERFORMANCE FORMULA: This advanced lash-enhancing serum, packed with powerful polypeptides, helps improve the appearance of lashes with just one daily application
IDEAL FOR ALL USERS: Perfect for women and men with brittle, weak, thin, or short lashes looking for a noticeable enhancement
HEXATEIN 1 COMPLEX: A unique blend of six key ingredients, including polypeptides, biotin, and amino acids, designed to condition, moisturise, and fortify lashes
RESULTS: Consumer studies show that 88% of participants saw an improvement in lash appearance, while 86% agreed their lashes looked fuller, thicker, stronger, and longer.* Based on a consumer study of 102 subjects over 56 days.
USAGE TIPS: Use once a day in the evening, apply to the base of the upper lash line, not on eyelids, the eye should be completely clean of any makeup or eye creams, allow serum to dry before applying other face products

Wewell Eyelash Growth Serum,Brow Lash Growth Serum, Natural Brow Lash Enhancer.Thicker Natural Longer Lift Eyelashes Enhancer Rapid Lash Growth,Nourish Damaged Lashes

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Why We Love It

Natural and hormone-free serum.
Faster, fuller lash growth.
Great for broken lashes.

Main Highlights

LONGER AND THICKER LASHES: Our Eyelash Growth Serum is packed with advanced ingredients that are gentle and soothing, which promote lash growth and increase lash length and thickness. The lash serum's ingredients penetrate deep into the lash follicles, stimulating lash growth and nourishing them from the root.
Eyelash serum, hormone free eyelash serum, eyebrow serum, eyelash serum, natural eyelash serum for faster eyelash growth, fuller and longer eyelashes, care for broken eyelashes
VISIBLE RESULTS IN WEEKS: Experience noticeable changes in just 3-4 weeks as your lashes become thicker, fuller, and visibly longer. For optimal results, continue using for up to 8 weeks. Achieve the naturally beautiful lashes you've always dreamed of.
POWER OF PLANT EXTRACTS: Formulated with premium ginseng extract, renowned for its potent antioxidant and nourishing benefits. It strengthens weak and brittle lashes, promoting natural growth and enhancing lash volume and length.
PRECISE AND SIMPLE APPLICATION: Designed with a user-friendly applicator, our eyelash serum allows for accurate and effortless application. The fine, pointed brush ensures the serum reaches the lash line effectively, maximizing its impact.

RapidBrow Eyebrow Enhancing Serum, Hexatein 2 Complex, 3 ml (Pack of 1)

25% OffFree Shipping

Why We Love It

Innovative formula for enhanced brows.
Promotes natural brow growth.
Easy application for targeted results.

Main Highlights

SCIENTIFIC FORMULA: Infused with Hexatein 2 Complex, this advanced blend of fortifying ingredients helps to deeply condition, strengthen, and protect your brows for long-lasting definition
FEATURES: The applicator allows for precise, hassle-free use, delivering a fast-absorbing, lightweight formula that seamlessly fits into your daily beauty routine
BENEFITS: 93% of participants saw fuller-looking brows in as little as 8 weeks! Based on a consumer study of 102 subjects over 56 days
USAGE: Simply apply RapidBrow onto the full length of the brow, the brow area should be completely clean of any makeup or eye creams - allow serum to dry before applying other face products
INNOVATIVE EYEBROW SERUM: RapidBrow is designed to enhance, condition, and improve the appearance of eyebrows

Nouveau Lashes Lash & Brow Conditioning Serum, Suitable for Use on Lash Extensions, Contains Powerful Antioxidants and Multi Vitamin Complex, Vegan, 8 ml

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Why We Love It

Nourishes lashes and brows.
Acts as effective primer.
Enhances fuller appearance naturally.

Main Highlights

NOURISHING MULTI-VITAMIN FORMULA – Specially formulated with a complex blend of essential vitamins and conditioning actives, this serum deeply nourishes and revitalizes lashes and brows, promoting a fuller, healthier, and more voluminous appearance over time.
IDEAL FOR DAILY USE & LONG-TERM BENEFITS – Designed for morning and evening application, this serum provides instant conditioning with every use while delivering long-term benefits, supporting a more defined, thicker look for both lashes and brows.
ANTIOXIDANT-RICH PROTECTION – Enriched with powerful antioxidants that help protect lashes and brows from daily exposure to environmental pollutants, ensuring they remain resilient, strong, and better able to withstand external stressors.
SAFE FOR LASH EXTENSIONS & NATURAL LASHES – This versatile serum is suitable for both natural lashes and lash extensions, making it an ideal aftercare product to support lash health following LVL treatments and other lash enhancements.
HOW TO USE – Apply to clean, dry lashes from root to tip and sweep through brows for even coverage. For best results, use twice daily, morning and evening, and as a primer before mascara to enhance lash volume.
WHY NOUVEAU LASHES- We’ve been lifting lashes and self-confidence since 2005. In that time, we’ve earned a reputation as the UK’s number one lash brand, across pre-treatment, consultation, application and aftercare. We help people enhance their eyes, so they can reveal their true self.

HAIR BURST Growth Serum for Lashes & Eyebrows - Repairs & Nourishes for Thicker, Fuller Eyelashes & Eyebrows - No Harsh Chemicals or Hormones, Vegan Formula

47% OffFree Shipping

Why We Love It

Longer, fuller, glossier lashes.
Stimulates collagen, hydrates lashes.
Reduces inflammation, prevents hair loss.

Main Highlights

GROWTH SERUM - Improve the length, thickness, strength of your lashes, add more volume, whilst conditioning your eyebrows and lashes daily.
2 IN 1 PRODUCT - Unique mascara wand applicator to coat the root and full length of lashes and eyebrows.
FULLER LASHES & BROWS - Formulated with active ingredient Capixyl which revitalises the hair follicles promoting new hair growth for both lashes and brows.
DAILY USE - Safe to use daily, ideally in the evening as part of your nighttime skincare routine. Simply comb through from the roots to the tips of eyelashes and brows.
HOMONE FREE - Our formula does not contain any Prostaglandins or Prostaglandin-analogues which can cause nasty side effects such as, dark circles, discolouration of the eyes and irritation around the eye area.

Long4Lashes FX5 Power Formula Wimpernserum by Oceanic, 3 ml

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Why We Love It

Innovative formula from Central Europe.
Extreme nourishment from root.
Trusted cosmetic expertise.

Main Highlights

INNOVATIVE FORMULA - Developed in one of the most modern scientific laboratories in Central Europe
EXTRA NUTRITION - The conditioning ingredients work from root to tip, promoting flexibility and resistance to eyelash leakage
UNIQUE PENTHASYMIN COMPLEX - Active peptide complex, oils, hyaluronic acid and provitamin B5 help the eye areas regain strength and strength
PENTHASYMIN COMPLEX — Active peptide complex, oils, hyaluronic acid and provitamin B5 help the eye areas gain new strength and strength
35 YEARS OF COSMETIC EXPERTISE - produced by a company with 35 years of cosmetic tradition, with the highest ISO and GMP standards
JUST A FEW SECONDS A DAY

L'Oreal Paris Clinically Proven Lash Serum for Stronger, Thicker-looking lashes, Enriched with Castor Oil and Hyaluronic Acid

7% OffFree Shipping

Why We Love It

Proven lash growth results.
Repairs eyelash damage.
Enriched with essential nutrients.

Main Highlights

Lash Serum for longer, thicker looking lashes; proven in lab, proven in life, Helps to repair eyelash damage from heavy mascara use, eyelash extensions and false lashes
Result: 94% agreed lashes looked fortified*, 97 Percent saw less lash loss*, 81 Percent agreed fringe looks fuller*; * Self-assessment from cosmetoclinic, 32 women, 4 weeks of application 2 x/day
Brush onto the upper and lower lash line, allow to dry for 60 seconds before applying mascara, For best results apply twice a day in the morning before mascara and at night after makeup removal
Enriched with lash caring ingredients: Hyaluronic Acid, Castor Oil, Amino Acids and Vitamin B5, Ultra-soft brush to coat lashes from root to tip with the lash serum, Narrow tip for precise application
Contents: 1x Clinically Proven Lash Serum by L'Oréal Paris, 2ml

PROLIXIR Organic Castor Oil 60mls with Biotin & Vitamin E - Growth Serum for Eyebrows, Eyelashes, Hair, Nails & Skin - Cold Pressed, 100% Pure, Vegan, Cruelty Free - Mascara kit with Pipette and Wands

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Why We Love It

Promotes brow and lash beauty.
Ensures organic, high-quality care.
Boosts confidence with transformation.

Main Highlights

🌟 EXCLUSIVE FORMULA WITH BIOTIN & VITAMIN E: Uniquely enhanced with biotin and vitamin E, our eyelash growth serum deeply nourishes follicles, accelerates lash and brow growth, and strengthens hair strands for visible results.
🌿 PURE COLD PRESSED CASTOR OIL: Our organic, cold-pressed castor oil for hair growth retains maximum nutrients to promote thicker eyelashes, fuller brows, and healthier, more resilient hair growth naturally.
🔥 BEST EYELASH GROWTH SERUM: Expertly crafted as a powerful castor oil eyelash serum, our advanced formula visibly boosts lash length and thickness, offering professional-level results at home.
✨ RAPID BROW SERUM FOR FULLER EYEBROWS: Achieve defined, fuller brows quickly with our targeted brow growth serum, enriched with biotin and vitamin E to stimulate growth and restore eyebrow density effectively.
🧴 PREMIUM QUALITY, LEAK-PROOF BOTTLE & WANDS: Our carefully designed leak-proof bottles ensure easy, mess-free application, accompanied by new, high-quality wands for precise eyelash and eyebrow serum application every time.

8.9

Excellent

We scanned 388 products

We reviewed these offers relevant to the Lash Serum within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like UKLASH, Grande Cosmetics, RapidLash, Wewell, RapidBrow, Nouveau Lashes, HAIR BURST, Long4Lashes, L'Oreal Paris, Prolixir, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Lash Serum in the market, we considered we took a deep dive into 1941 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is UKLASH Eyelash Growth Serum For Longer & Fuller Lashes - 3ml. Clinically Proven Formula for Naturally Longer Lashes and Extensions. Vegan & Cruelty-Free. We love many things about this product by UKLASH. What sets it apart from the competition is Award-winning for visible results, Easy and quick application, Clinically tested and approved.
The best value product for most shoppers and where user satisfaction is continuously the highest is Grande Cosmetics GrandeLASH-MD Lash Enhancing Serum - Award-Winning Formula for Longer, Thicker-Looking Lashes - 4 ml by Grande Cosmetics based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Lash Serum and the best cost-to-value ratio is HAIR BURST Growth Serum for Lashes & Eyebrows - Repairs & Nourishes for Thicker, Fuller Eyelashes & Eyebrows - No Harsh Chemicals or Hormones, Vegan Formulaat HAIR BURST with a 47% discount.
Our list of the best Lash Serum is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Lash Serum in The UK

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We scanned 388 products

We concluded that: