This product has done wonders for my eyelashes. I have fuller lashes and I’m happy with the results. I use it every day and it’s great that it is natural.
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Prostaglandin-free formulas powered by five peptides, biotin, and natural botanicals — clinically inspired to deliver thicker, fuller lashes and brows.
Advanced Multi-Peptide Complex
Prostaglandin-Free & Gentle
Rapid, Visible Results
Compatible with Extensions & Treatments
USP #5
Rated 4.8 based on 1,000+ Reviews
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Trinsic Natural Eyelash Growth Serum
Enhancing & Conditioning Lash Serum for Thick...
£34.99
10 reviews
Trinsic Natural Brow Serum
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Enhancing & Conditioning Lash Serum for Thick...
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Strengthened, nourished, and visibly fuller — see the difference our multi-peptide formulas. Full results in 8-12 weeks.
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+10,000 Happy Customers
what people are saying...
Jiki
Great
I’ve been using the Trinsic Eyelash Serum consistently and I’m really impressed. It’s gentle on the eyes, doesn’t cause irritation, and feels lightweight. After a few weeks, my lashes look healthier, stronger, and noticeably fuller. I like that it’s prostaglandin free and made in the UK. Easy to apply and good quality packaging. Would definitely recommend for anyone wanting natural lash improvement.
JA.
Amazing
Powerhouse ingredients, visible results. I bought this specifically for the peptides and biotin combo. It’s a great alternative to the expensive hormone-based serums. My lashes feel stronger and I’m seeing less fallout when I take my makeup off. The applicator is precise and the bottle lasts a long time.
Julie Ann B.
Easy to Apply
This is a fantastic product to lengthen and thicken your lashes. I feel like my lashes are looking fuller and healthier. So easy to apply and doesn’t irritate my eyes as other serums have done.
Em
Easy to Apply
It’s super easy to apply, which is a real bonus. I’ve been using the Trinsic Eyelash Serum consistently and have been pleased with how gentle and lightweight it feels. It hasn’t caused any irritation, and over a few weeks I’ve noticed my lashes looking healthier, stronger, and a little fuller. It’s been a simple product to add to my routine, and the results so far have been reassuring.
Louise Orme
Good to Use
This is an amazing product. Firstly, it is very easy to apply. It glides on smoothly with no mess. I have been using this for a couple of weeks now and have already noticed an improvement in the thickness of my eyelashes. Looking forward to seeing the difference in another couple of weeks.
Matthew S.
Very Good, No Irritation
It’s very good as the product helps reduce the excessive shedding of my eyelashes. Quite happy with this. I used it and it didn’t leave any marks or irritation — my eyes didn’t water in contact with the product even though they are quite sensitive. The applicator is good and it slides nicely on the eyelashes; it doesn’t clump up with the product.
Kathy D.
This One Works!
This is the 4th eyelash serum I’ve tried and this one really does the job. The eyelashes on one eye had become really short and sparse for some reason, so in desperation I tried this serum. Used it every night for 2 or 3 weeks and avoided mascara unless I was going out somewhere significant! My eyelashes have now grown back healthily - very happy! I will continue to use it a few times a week.
Thomas B.
Quick Results
It has quickly jumped into action and after a few days’ use I can already see the difference! Absolutely cannot wait to see what is to come from continuously using this! Great amount and easy to apply.
JB
Easy Application, No Mess
I have sensitive eyes and wear contact lenses. The tiny little brush makes the application easy and comfortable and I had no irritation to my eyes — no chemical smells or scents. My lashes became softer and thicker. It feels like a luxury product at an affordable price point.
Kavya Reddy
Worth Buying
I’v been really impressed with this eyebrow serum. It’s gentle, easy to apply, and absorbs quickly without any irritation. After a few weeks of consistent use, my brows look fuller, healthier, and more defined, especially in sparse areas. I like that it’s prostaglandin free and packed with nourishing ingredients like castor oil and peptides.
Rob
Great Find
A really nice product — the serum is soft and flows well. Great product and I can’t wait to see the results over the next few weeks.
Wilson
Nice Product
I have only just started using this. It is easy to use and causes no irritation. Can’t wait to see the results. I have a friend using this and it works well for them.
Cookie
Natural Science
I have incredibly sensitive eyes. False lashes simply aren’t an option for me, and even wearing mascara can cause discomfort. I have no idea how this serum works, but rather than my eyes feeling sore, it actually provides relief.
JulieAnn B.
Gentle, Easy to Apply
This eyebrow serum is fantastic! I have used it every evening now for a week and the difference it has made is great — my eyebrows are noticeably fuller, longer, and healthier. My brows now feel much thicker and have formed a better shape. The formula is gentle, easy to apply, and does not irritate my skin at all. I am pleased with the results; it’s a great product and super easy to use. The serum comes in a stylish silver tube like mascara and looks very trendy. It is ...
Terri Jones
Fuller Eyebrows
Easy to use and get on the eyebrow. My eyebrows look fuller, and after years of plucking I have seen great benefits. This is worth every penny.
Eliza D
Good Product
Have used various eyebrow products in the past. This was definitely as good as some of the more expensive ones. You just have to be patient to see results.
Thomas B.
Great Eyebrow Serum, Really Helped!
Very gentle on the skin, which helps for use on all skin types! It really helped nourish, hydrate, and strengthen my brows. I felt and noticed the difference fairly quickly. A big plus for me is that it’s vegan and free from harsh chemicals, which is always a bonus. Very recommended for a natural boost to brow growth!
Freddie
Good Quality
Definitely improved the condition of the eyebrow hair. My hairs grow quite thick but are very wiry naturally. This serum makes them soft but keeps the thickness and definitely strengthens the hairs.
Leonie McDonagh
Effective
Starting to notice improvement after a few weeks. Such neat and pretty packaging — love it on my makeup stand. Quick and pleasant to use. Will definitely buy again. Bought it with the eyelash serum. Great range.
Wilson
Easy to Use
Product is easy to use and causes no irritation. It conditions my eyebrows and they appear thicker and healthier. I am happy with the results.
JB
Liquid Serum, Non-Tacky
A nice product to add into my skincare routine. It made my eyebrows a lot softer and easier to manage. The serum itself is a liquid rather than a gel, so it’s non-tacky and dries in quickly. No harsh smells! Cute packaging.
Cheryl
Better
Left my brows feeling hydrated and I definitely noticed a difference. Will keep using.
Louise Orme
Excellent Quality Serum
A really good serum. The product was easy to apply with the wand. The right amount of product came out each time to cover one brow. I have been using it for a couple of weeks now and noticed an increase in thickness. Will continue using.
Jiki
Great
I’ve been using the Trinsic Eyelash Serum consistently and I’m really impressed. It’s gentle on the eyes, doesn’t cause irritation, and feels lightweight. After a few weeks, my lashes look healthier, stronger, and noticeably fuller. I like that it’s prostaglandin free and made in the UK. Easy to apply and good quality packaging. Would definitely recommend for anyone wanting natural lash improvement.
JA.
Amazing
Powerhouse ingredients, visible results. I bought this specifically for the peptides and biotin combo. It’s a great alternative to the expensive hormone-based serums. My lashes feel stronger and I’m seeing less fallout when I take my makeup off. The applicator is precise and the bottle lasts a long time.
Julie Ann B.
Easy to Apply
This is a fantastic product to lengthen and thicken your lashes. I feel like my lashes are looking fuller and healthier. So easy to apply and doesn’t irritate my eyes as other serums have done.
Em
Easy to Apply
It’s super easy to apply, which is a real bonus. I’ve been using the Trinsic Eyelash Serum consistently and have been pleased with how gentle and lightweight it feels. It hasn’t caused any irritation, and over a few weeks I’ve noticed my lashes looking healthier, stronger, and a little fuller. It’s been a simple product to add to my routine, and the results so far have been reassuring.
Louise Orme
Good to Use
This is an amazing product. Firstly, it is very easy to apply. It glides on smoothly with no mess. I have been using this for a couple of weeks now and have already noticed an improvement in the thickness of my eyelashes. Looking forward to seeing the difference in another couple of weeks.
Matthew S.
Very Good, No Irritation
It’s very good as the product helps reduce the excessive shedding of my eyelashes. Quite happy with this. I used it and it didn’t leave any marks or irritation — my eyes didn’t water in contact with the product even though they are quite sensitive. The applicator is good and it slides nicely on the eyelashes; it doesn’t clump up with the product.
Kathy D.
This One Works!
This is the 4th eyelash serum I’ve tried and this one really does the job. The eyelashes on one eye had become really short and sparse for some reason, so in desperation I tried this serum. Used it every night for 2 or 3 weeks and avoided mascara unless I was going out somewhere significant! My eyelashes have now grown back healthily - very happy! I will continue to use it a few times a week.
Thomas B.
Quick Results
It has quickly jumped into action and after a few days’ use I can already see the difference! Absolutely cannot wait to see what is to come from continuously using this! Great amount and easy to apply.
JB
Easy Application, No Mess
I have sensitive eyes and wear contact lenses. The tiny little brush makes the application easy and comfortable and I had no irritation to my eyes — no chemical smells or scents. My lashes became softer and thicker. It feels like a luxury product at an affordable price point.
Kavya Reddy
Worth Buying
I’v been really impressed with this eyebrow serum. It’s gentle, easy to apply, and absorbs quickly without any irritation. After a few weeks of consistent use, my brows look fuller, healthier, and more defined, especially in sparse areas. I like that it’s prostaglandin free and packed with nourishing ingredients like castor oil and peptides.
Rob
Great Find
A really nice product — the serum is soft and flows well. Great product and I can’t wait to see the results over the next few weeks.
Wilson
Nice Product
I have only just started using this. It is easy to use and causes no irritation. Can’t wait to see the results. I have a friend using this and it works well for them.
Cookie
Natural Science
I have incredibly sensitive eyes. False lashes simply aren’t an option for me, and even wearing mascara can cause discomfort. I have no idea how this serum works, but rather than my eyes feeling sore, it actually provides relief.
JulieAnn B.
Gentle, Easy to Apply
This eyebrow serum is fantastic! I have used it every evening now for a week and the difference it has made is great — my eyebrows are noticeably fuller, longer, and healthier. My brows now feel much thicker and have formed a better shape. The formula is gentle, easy to apply, and does not irritate my skin at all. I am pleased with the results; it’s a great product and super easy to use. The serum comes in a stylish silver tube like mascara and looks very trendy. It is ...
Terri Jones
Fuller Eyebrows
Easy to use and get on the eyebrow. My eyebrows look fuller, and after years of plucking I have seen great benefits. This is worth every penny.
Eliza D
Good Product
Have used various eyebrow products in the past. This was definitely as good as some of the more expensive ones. You just have to be patient to see results.
Thomas B.
Great Eyebrow Serum, Really Helped!
Very gentle on the skin, which helps for use on all skin types! It really helped nourish, hydrate, and strengthen my brows. I felt and noticed the difference fairly quickly. A big plus for me is that it’s vegan and free from harsh chemicals, which is always a bonus. Very recommended for a natural boost to brow growth!
Freddie
Good Quality
Definitely improved the condition of the eyebrow hair. My hairs grow quite thick but are very wiry naturally. This serum makes them soft but keeps the thickness and definitely strengthens the hairs.
Leonie McDonagh
Effective
Starting to notice improvement after a few weeks. Such neat and pretty packaging — love it on my makeup stand. Quick and pleasant to use. Will definitely buy again. Bought it with the eyelash serum. Great range.
Wilson
Easy to Use
Product is easy to use and causes no irritation. It conditions my eyebrows and they appear thicker and healthier. I am happy with the results.
JB
Liquid Serum, Non-Tacky
A nice product to add into my skincare routine. It made my eyebrows a lot softer and easier to manage. The serum itself is a liquid rather than a gel, so it’s non-tacky and dries in quickly. No harsh smells! Cute packaging.
Cheryl
Better
Left my brows feeling hydrated and I definitely noticed a difference. Will keep using.
Louise Orme
Excellent Quality Serum
A really good serum. The product was easy to apply with the wand. The right amount of product came out each time to cover one brow. I have been using it for a couple of weeks now and noticed an increase in thickness. Will continue using.
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Why Choose Trinsic Lash Serum
See why thousands are switching to a prostaglandin-free eyelash growth serum
Prostaglandin-Free
5+ Peptides
Gentle Formula & Irritation Free
Safe for Lash Extensions
36 Advanced Ingredients
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