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Cosmedix Opti Crystal- Liquid Crystal Eye Serum 7g

4.5 of 76 reviews


4 instalments of $40.00

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4 instalments of $40.00

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Is this for you?

A liquid crystal serum that replenishes damaged, thinning skin around the eyes. Alpha lipoic acid, along with the repair properties of copper peptides, provide a lasting reduction in the look of fine lines and wrinkles. It also contains coconut extract, a potent strengthening ingredient, delicate enough for sensitive eye tissue.

  • Cosmeceuticals
  • Cruelty Free
  • Artificial Fragrance Free

What customers say

GREAT - 86% recommend

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  • 20s
  • 30s
  • 40s
  • 50+

Eye Concern:

  • Age Prevention
  • Dark Circles

Skin Concern:

  • First signs of ageing

Skin Type:

  • Dry
  • Normal to dry
  • Normal to oily
  • Oily

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Cosmedix Opti Crystal- Liquid Crystal Eye Serum Reviews

4.5 of 76 reviews

86% recommend this product

  1. 54

  2. 12

  3. 10

  4. 2

  5. 0

Most Helpful Positive



The best eye serum out there! A little awkward to use at first as it’s not spreadable like your average serum/cream and it takes a while to penetrate the skin. But, my eyes look instantly brighter after application and I have seen a noticeable difference to the fine lines/crepeyness under my eyes.

Most Helpful Criticism

not sure


not sure on this, it was a little irritating and I did not notice much of a change
  1. Amazing!


    The best eye serum out there! A little awkward to use at first as it’s not spreadable like your average serum/cream and it takes a while to penetrate the skin. But, my eyes look instantly brighter after application and I have seen a noticeable difference to the fine lines/crepeyness under my eyes.
  2. not sure


    not sure on this, it was a little irritating and I did not notice much of a change
  3. Worth the money


    I know this is super expensive, but you firstly really do only need the tiniest bit, and also it just works. I survived on the last tiny scraps of my Mum's tube of this for about 6 weeks!! So now I've purchased a full tube I have no doubt it will last a minimum of 6 months or more. I use it at night only (I think too sticky for day time) and my eczema prone eyes are comforted and kept moisturised....
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  4. Big Mistake !


    This is a back to front review. I had been using this amazing eye serum for about 2 years. Bloody loved it and banged on about it to anyone who would listen. I have no idea why, however I decided on a whim to try another (very expensive & popular brand on this site) serum ... Covid boredom perhaps? None the less, a very big mistake. Fast forward 1.5 months on this new serum and my under eyes has...
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  5. Hydrating


    At first I thought I could only use at night as it would upset makeup but I’ve found I was using too much when I bought it. Now that I’ve had for a while, my hydration is much better and I use tiny amount and it works perfectly. It seems expensive but lasts such a long time.
  6. great


    great eye cream a little goes a long way
  7. Unicorn eye cream


    I've been using this eye serum since November 2019, and love it! I was put onto it by the lovely ladies at Melanie Grant and, although pricey, have been using it ever since. My under eye area is definitely brighter and more hydrated, and it doesn't give me the dreaded under-eye milia. Only issue is that it doesn't contain retinol, so I might try another eye serum once I'm done with this purchase t...
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  8. Amazing!


    Was a bit sceptical on this eye cream considering there is no retinol, however it is amazing! Putting it on is so mesmerising as it is so pretty! It is deeply hydrating for the eye area and does not cause and irritation. I do suggest though to ensure your face is moist before using this product so it has more mobility when patting it around the eye
  9. Exceptional .....a definite keeper

    Missy Lulu

    I have tried soooooo many eye products and (at 62) I find almost all don't deliver for me. But, this is an exception ...... in fact, exceptional! Apart from the fact that it is the most visually beautiful product I have ever seen, it delivers what it promises. It does have a slightly sticky feel to it ..... but that works in its favour. It means this doesn't rub off on your pillow case over night....
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  10. Best Eye Serum


    This eye serum really is incredible. It instantly makes my eyes look brighter and less puffy. It feels so nice and hydrating on the skin and prolongs the wear of my eye shadow. I just wish it was a bit more affordable!
  11. Good but not great


    Bought this product after reading so many great reviews, including from Zoe Foster Blake. I have a few fine lines under my eyes, and was hoping to reduce these and prevent further ageing as much as possible. I haven't noticed a huge difference in my eye area to be honest, and I feel for the price point and the amount of serum you get, it wasn't worth it. I do have to say though that I am in my mid...
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  12. Game changer


    This product is a game changer. Eye area feels so hydrated after a few applications. Definitely only need a tiny amount. So lush. Will but again.
  13. Awesome Eye Serum


    I have tried a lot of eye serums and creams. After using this serum, my under eyes are visibly smoother and hydrated. It even improves my dark circles. The key to this serum is to just use a tiny amount and it is does have a slightly sticky consistency. I love the packaging and the unique colour of the serum.
  14. Best eye serum


    I've tried a tonne of eye products including Estee Lauder, Tatcha, Lancome, etc... this one is a game changer. You have to try it to believe it. I recommend alternating with a retinol eye serum. Also it is very sticky and so you wont rub it all off as soon as you get in bed.
  15. Not sure


    You only need the smallest dot of this as a little goes a long way. If you use too much it can be quite ‘sticky’ under the eyes. I think there are better products out there for the price and I just felt the texture of this was a bit sticky for me and didn’t love it. The colour is the serum is amazing though! So beautiful
  16. Expensive and okay


    This received some rave reviews by my beautician and I saw some other reviews that said it was an amazing product. After trialing different (expensive) eye creams, I thought I might as well give this a go. This was definitely THE most expensive eye cream I have ever purchased so I had high hopes.
    That being said, not sure what I was seeking to achieve as being in my early 30s, I haven't too...
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  17. Fantastic product


    This product is no joke. I was struggling with very dry and flakey skin around my eyes and nothing was working..until I found this! While is it quite pricey, it is definitely very hydrating and you don't need to use a lot of product per application.
  18. The best.


    Incredible eye product. Stays in place, doesn’t run. Thick and moisturizing. I definitely noticed a difference in fine lines and hydration around my eyes using this. Pricey but I think worth the investment.
  19. Fun eye serum


    Feels like I’m using unicorn tears under my eyes. It doesn’t feel like the a normal thick, rich eye serum. This one is more like a gel/sticky serum but it wears beautifully under make up and feels very hydrating.
  20. Fun eye serum


    Feels like I’m using unicorn tears under my eyes. It doesn’t feel like the a normal thick, rich eye serum. This one is more like a gel/sticky serum but it wears beautifully under make up and feels very hydrating.
  21. Really great for those starting to notice the first signs of ageing


    Super hydrating and could see my under-eye area brightened with a few weeks of use. Dark circles are still there but easier to conceal because this product helps to moisturize, smooth and brighten the area
  22. Fights dullness and dark circles.


    I tend to get really dry around my eye area, and this has been amazing for combatting that. It is very hydrating, and helps to fight dark circles. It gives a wonderful smooth finish and a nice glow to the skin.
    Best part, a little goes a long way - I have had the one tube for 8 months and still haven't run out.
  23. Powerful Anti-Aging Eye Cream


    Love this eye cream!! Besides subtly camouflaging dark circles, I find that it fills instantly to smooth and the tighten the delicate eye area.
  24. Great so far!


    It's only been a couple days since I've been using this product but I'm loving how moisturising it is. The results are pretty instantaneous. The holographic colour of the serum is beautiful.
  25. Great!


    being dehydrated and fighting age around the eye area, this is the best product I’ve tried. Highly recommended
  26. Didn't work for me


    I didn't notice any major improvements. The serum is quite greasy so I found I could only put it on at night. If it put it on and didn't go to sleep straight away it would make my eyes sting. Given the price, it did not do what I expected.
  27. Nice


    Nice eye cream that works very well at de puffing the eyes and smoothing fine lines
  28. Go ahead, do your eyes a favour

    I look younger. Seriously.

    After about a week and a half of using this I have seen a photo of myself and I look so much younger. The tired dark circles are slowly fading and it’s made such a difference to my overall appearance, I feel amazing. It’s a beautiful product and it’s made me very happy - worth the big bucks!
  29. Amazing


    I had to save so long to get this but omg worth it. I was at first disappointed at size BUT you need only the tiniest amount. Really helps with fine lines and just plumping due to moisture
  30. The best eye serum ever


    The best and only eye serum I'll ever use! You really only need a tiny pin size blob to cover both eyes, and it somehow leaves your eyes hydrated and brightened. Great under make up. Great before bed. Great all the time, I love it to bits.
  31. Prettiest eye cream


    As the other reviews mention, the consistency is a bit sticky but once you work out how you like to apply it, you'll love it.
    It has helped with the appearance of fine lines and hereditary dark circles. My sensitive skin has no problems with this eye serum and I have not a reaction.
    Will be repurchasing.
  32. colours!


    bought this eye cream after reading a post about how amazing it is. i can't say that it's resulted in any major improvements however, i don't really have any eye concerns at present and purchased it as a preventative measure. as for the serum itself - it is the prettiest eye serum i've ever seen! it is rather tacky, which i don't mind, but i find that for me, it's best suited to using at night rat...
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  33. Amazing eye cream


    This gorgeous eye cream is something else! So unbelievably good! Helped so much with puffiness and is also slightly softened my fine lines! Absolutely amazing
  34. LOVE


    I LOVE this eye cream. It feels tacky so needs a few minutes to absorb... but saying that it also feels extremely nourishing and hydrating which is exactly what I was after. Highly recommend this product. The only downside is the price point.
  35. Purple holographic eye serum


    The serum comes out purple holographic which really surprised me. I imagine it must serve some light-reflecting purposes to brighten up the eye area. Non-irritating serum and has not caused any milia (my eye area is very sensitive) and fine for contact wearers (i wear contacts).

    Only a tiny little bit if recommended and I warm it up between my two ring fingers before tapping it on ge...
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  36. Love love love


    I love this cream! It’s a small tube but lasted approx 4 months. Suits well if you have semi dry skin with mimic wrinkles around the eyes. Already purchased my second tube.
  37. Great under makeup


    This eye cream is great, particularly under makeup. It’s very moisturising, yet not thick. It’s almost sticky but rubs into the skin well. I love the unicorn tear look it gives, it helps distract from my dark circles.
  38. LOVE!


    I adore this eye serum. I use it in the morning and found it has made a huge difference to my fine lines and darkness.
  39. What sorcery is this???


    I’m over 40 and I’m interested in results not gimmicks. I have been on a really disappointing journey to find an eye cream/serum to address fine lines, puffiness and loss of elasticity. I only bought this because I had tried pretty much everything else, was still searching, and the reviews were amazing. Everything about this eye serum screamed of hype and gimmicks. Except the results. I’m so happ...
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  40. Lovely


    Decent! I reach for my skinstitut one more than this but this ones still really nice!
  41. Amazingly Stunning Eye Cream


    This is not only the most beautiful eye cream (holographic), it is also a great product. It has thick, glossy consistency and stays exactly where you put it. I put it on straight after I hope out of the shower in the morning, let it soak in for a few minutes and then cover my whole face with my daily SPF moisturizer. My eyes seem fresher and more hydrated when I'm using this. Would definitely purc...
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  42. It’s okay


    Haven’t had amazing results unfortunately! Still good but nothing special whatsoever
  43. Tried a sample


    I've sampled this one and it's incredible after one use! It's just so expensive for what it is. I think that a strong skincare routine with cheaper brands is a better option. That said, it does seem worth the investment. I'm on the fence with this one.
  44. Cosmedix Opti Crystal- Liquid Crystal Eye Serum


    Left my skin feeling a little dry so 100% not for night & for the price point, could probably find something better for day wear.
  45. Life changing


    This is amazing!! I use at night, only need the tiniest amount. My old eyes are more hydrated than they have ever been. I’m impressed. This has had more effect than anything I’ve ever used, including products costing a lot more. It’s a deep hydration that lasts as opposed to surface only. Don’t apply make up over as it will sink into lines
  46. Hydrated


    Lasts for a long time and I do feel my skin hydrated after use. Can't say I've noticed long term effects, but have only been using for a month
  47. Worth the Investment


    Great eye serum - lasts a good 6+ months - and more importantly, it works! It is a slow-and-steady serum, with best results noticed with long-term consistent use, - but it has definitely addressed fine lines and because of it's beautiful 'unicorn tears' look, feels indulgent. I also love that this serum is very viscose, once on it doesn't budge; so it works great under creams, sunscreens, and con...
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  48. A little goes a long way


    Super hydrating and could see my under-eye area brightened with a few weeks of use. Dark circles are still there but easier to conceal because this product helps to moisturize, smooth and brighten the area
  49. defiantly spending the money on


    This product is very pricey, however that's expected with eye creams and honestly I've never spent my money on something better! I have very dry undereyes and eyelids and this product lived up to every one of my expectations and hydrated my eyes so much! I love it so much and it last for ages! definitely will be telling all my friends to buy it
  50. TINY


    I feel it is hard to judge just how good this product is as I was so annoyed by the size! I received bigger free samples with my order! Apart from the fact that it is not worth the money the texture actually does go on very nice and looks amazing when it comes out
    Have been using about every second day for over a month I haven’t seen drastic results yet but I am hopeful! You have to wear so...
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  51. Amazing


    This is amazing! All you need a little drop and it’s enough for under both eyes. Love the textures and the feel!
  52. Helps with wrinkles and puffiness


    This serum is really sticky so I only use it at night. Hasn't helped with the dark circles but seems quite good for wrinkles and reducing puffiness. Not sure if I would buy again though.
  53. Love it


    Definitely has improved my overall eye area . Looks brighter and healthier . Wish it wasn’t so exspensive but I guess you get what you pay for :)
  54. Unique product


    I love this serum for day use as it sits nicely under my make up and seems to illuminate the eye area somewhat. Its a cool opal/galaxy kinda colour! Pricey for such a small tube so I do tend to use it sparingly. I don't tend to use it all the time in winter as I require something more hydrating.
  55. Amazing all rounder serum - the tiny tube lasts forever!


    This serum is perfect as an all rounder - sometimes I have a bit of puffiness, darkness and of course a few wrinkles and this tackles the lot. You only need the tiniest amount so the tube lasts forever which makes the price tag justifiable. The texture is quite sticky which was different to other eye products I’ve used but it keeps it in place. Have been using this for over 2 years now and I’m not...
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  56. Amazing


    I got a sample of this from my beauty therapist and omg!! Exy but worth it...so beautiful under eyes and sits perfect under makeup. Nourishing and brightening. It’s on my list of treats at tax time!!
  57. Keeps my under eyes firm and hydrated


    This does such a great job of reducing fine lines and dehydrated under eyes.
    I've noticed that this helps keep my under eyes plump and stops them from looking hollow. Although this seems expensive for such a small amount of product, it lasts so long because only the the tiniest amount is needed and I really think it's worth it.
  58. Wow


    This has really made a difference after just 2 weeks, I.oressed!
  59. Perfect


    People will tell you it’s very thick and difficult to spread. That’s what makes it number one. Stays where you put it, doesn’t leak into your eye and mascara like cream. Dab it on in pinhead amounts. Tap it around and it spreads as it warms. Does what it says - fine lines yes, moisturises yes, dark circles to a degree.
  60. Amazing


    I brought this product after reading some reviews highly recommend.Purchased more then 6 months ago I received it and started to use it straight away.
    Major difference after a week I noticed the fine , saggy lines under my eyes were almost gone and smoothed out.
    So after using this product for 2 months morning and night and you only need the smallest amount.I put it up in the cupboard ...
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  61. The holy grail of eye creams


    Overall I have combination skin (sometimes dry skin, but consistently oily through the t-zone and prone to hormonal breakouts around the jawline) . When I started using this product I was 27 and using no anti-aging products. I was shocked when I saw a photo of myself with swollen, saggy bags under my eyes with crows feet appearing.

    After doing a lot of research I decided to invest in ...
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  62. Great products come with a price


    I was very sceptical about this at first, I purchased this based on some intense research and varying reviews and took a leap of faith that well and truly paid off. My biggest concern at the time of purchase was crepey eyelids and those pesky corner lines, after religiously using this in the am and pm I noticed a significant improvement in my eyelids and it most certainly helps with crows feet. I...
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  63. Heavy and over priced


    It's hard to find an eye cream that does what it says. i don't think this cream really does much. And its very expensive. Its very sticky and I would only recommend on very aged skin or your eyes really puff up.
  64. Best eye cream ever


    While this is quite expensive, for me, it is worth every cent and you only need a tiny amount so it lasts a very long time. I use it at night only. It's ultra hydrating and helps with dark circles. No need for concealer with this in your daily skincare routine. I've tried many different eye creams in the past and this is the only one that I think actually does anything.
  65. My First Eye Product


    Not one for eye products, however, This product is amazing I love the way it changes the tone of my undereye area
  66. Don't believe the hype


    This product came highly recommended to me by my facialist and as a fan and user of a number of Cosmedix products I was looking forward to trying this beauty out. I'm sorry to say nothing happened. Absolute zilch.

    It is a very pretty, shimmery blue colour with a not- unpleasant, sticky honey-like formula. My main concern is dark circles and sadly they remain! People do rave about it t...
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  67. Nice


    I tried a sample of this and it seems very luxe indeed. Given the price point I'm not sure I would buy the full size.
  68. The Best eye cream i have ever used!!!

    Meike (Adore Beauty Staff)

    Finally I have found my ultimate eye cream that wont irritate my sensitive and reactive eye area and works!
    It is ultra hydrating and helps with dark circles and small lines! So if you have red patches and get irritated from most eye creams this is the one for you.
    Hot tip - USE SPARINGLY - it goes along way hence the size of the tube!
    I use it as night treatment and only in t...
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  69. Not wowed


    Not going to lie, I do expect miracles from my eye cream - I am extremely unrealistic. I bought this hoping it would diminish my puffiness, but I think I just have to accept that nothing will cure the puffiness until I stop drinking wine. But it does feel nice, and keeps the fine lines at bay, and sits really nicely under makeup.
  70. Amazing


    Skin type: Oily/combination

    This product is amazing I love the way it changes the tone of my undereye area.
  71. Drab to Fab


    This small package has big surprises! It's so fab. I have used a lot of different eye creams in the past and I wouldn't use anything else. My dermal clinician recommended this to me as I have a few smile creases around my eyes. This eye serum hydrates the skin around my eyes ever so gently. The texture is a little sticky but I find that works really well as it leaves this amazing glow around my ti...
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  72. Great


    Good product, i use this every second night before bed. Its a thick wax-like texture but it smooths out when you rub between your fingers before applying. Really hydrates the undereye area
  73. Still unsure!


    I’m still unsure about this product - have been using for 2 weeks now. It is kind of like a wax texture that you have to warm up in your fingers first to make it more spreadable. Even still, I feel like it drags on the skin. It says you only need a pin head sized amount, but I don’t think that covers the whole under eye area. I’m used to using a cream type of eye product. Maybe I’ll just have to g...
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  74. Actually works


    I have hereditary dark circles as well as fine lines under my eyes. This is the only product I've ever used which makes a visible difference. It successfully brightens and keeps my fine lines at bay.
  75. Beautiful


    You won’t understand the term unicorn tears until you get this eye cream. It reflects in rainbow pearl colours once applied. You only need a pin head sized amount. After a few weeks I really do think it’s helping to reduce my under eye fine lines. Will continue to use to see long term results.
  76. Still deciding!


    Not convinced of this one yet given the price. It feels great when it’s on but I’m not sure if I’ve noticed a change to the fine lines under my eyes.
  77. Highly recommend!

    Ash (Adore Beauty Staff)

    I have tried many eye treatments but this the first one that I’ve used that actually works.
    You only need a pin size amount but boy does it pack a punch. Its hydrating and plumps any fines lines.
    I've been though one tube which lasted a long time and on to my 2nd.
    It has holographic pigments which is best described as mermaid tears, ever so pretty.
    I would definitely rec...
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  78. Best anti ageing eye product I've ever used


    This product has a cult following for a reason. It is such a great anti aging product and I believe it really helps to hold back the signs of aging in the eye area. It has lots of great high tech ingredients including several patented peptides such as Liquid Crystal which gives the product its name. . It has quite an interesting texture - like a thick viscous gel. You only use a pin head size ...
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  79. Review & Earn
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