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✨ Bright eyes, bold moves — because your glow waits for no one!
COSMEDIX Opti Crystal Under Eye Serum is a luxurious, ultra-hydrating liquid serum designed to visibly reduce dark circles, puffiness, fine lines, and wrinkles. Enriched with potent antioxidants like Spin Trap and Alpha Lipoic Acid, it provides 24/7 firming and brightening benefits suitable for all skin types. This clean, cruelty-free formula supports a youthful, rested appearance and seamlessly fits into AM and PM skincare routines.

| ASIN | B01CPSP7PM |
| Best Sellers Rank | #76,876 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #190 in Eye Treatment Serums |
| Brand | COSMEDIX |
| Brand Name | COSMEDIX |
| Customer Reviews | 4.0 out of 5 stars 219 Reviews |
| Global Trade Identification Number | 00847137052652 |
| Included Components | COSMEDIX Under Eye Serum for Dark Circles & Puffiness, Opti Crystal - Lifting & Firming Liquid Serum for Fine Lines & Wrinkles - Brightening, Moisturizing, & Hydrating Anti Aging Eye Puffy Bags Serum |
| Item Form | Creams, Gels and Lotions |
| Item Type Name | COSMEDIX Under Eye Serum for Dark Circles & Puffiness, Opti Crystal - Lifting & Firming Liquid Serum for Fine Lines & Wrinkles - Brightening, Moisturizing, & Hydrating Anti Aging Eye Puffy Bags Serum |
| Item Volume | 0.05 fluid ounces |
| Item Weight | 5.67 g |
| Manufacturer | COSMEDIX |
| Manufacturer Part Number | 8770310 |
| Material Features | Antioxidant |
| Material Type Free | Gluten Free |
| Model Number | 931402010 |
| Number of Items | 1 |
| Product Benefits | Helps minimize the appearance of fine lines and wrinkles, brightens the look of dark circles under eyes and deeply hydrates to encourage the appearance of firmer skin Product Benefits Helps minimize the appearance of fine lines and wrinkles, brightens the look of dark circles under eyes and deeply hydrates to encourage the appearance of firmer skin See more |
| Recommended Uses For Product | dermatology |
| Scent | Unscented |
| Scent Name | Unscented |
| Skin Type | All |
| Special Ingredients | Antioxidants |
| Target Use Body Part | Face |
| UPC | 847137020200 847137052652 |
| Use for | Face |
| Warranty Description | Warranty |
I**S
Magic
There is a learning curve to applying this eye serum but just to say, less is more. You don’t need much. I let it sit for a few minutes and then continue to tap it in. It is sticky but eventually sinks in. I’m an esthetician and have tried soooo many eye products and this one has impressed me the most as far as how quickly you see results. I’m 53 and when I wear eye makeup it sometimes settles into the inner corner wrinkles that are normal for my age. This eye serum has solved that issue. I look in the mirror stunned. I also think it helps prolong my eye makeup during the day and simply firms the delicate skin around the eyes. For now I’m only using this product during the day and another eye cream at night. This product is pricey but with how small of an amount you need, this will last you a good while. I will be recommending this to clients.
み**や
really good!
This product is really good if you ask me. I bought it in march 2023, and I've been using it daily since then. The tube is TINY and it's not cheap but I've been using it for 9 months so value seems ok? I'm not even out of it yet but I'll reorder soon. I have basically no wrinkles under my eyes, and my skin is soft and moisturized there when I use it. I had some fine lines before but this product really works well. I see a lot of reviews talking about it being blue and shiny and the color not going away, as well as sticky, and not working with make up well. They may not be using it well because I have none of these problems. IMPORTANT: I use it in the morning before make up only. It will be sticky if you only use this. After washing my face, I mist with water and apply a vitamin C&E serum, followed by lightweight cica moisturizer all over. Once that dries, I squeeze 4-5 "flat dots" of COSMEDIX Opti Crystal Liquid Eye Serum under my eyes. I do this by squeezing a tiny bit and dabbing it directly onto my skin from the tube itself. I say "flat dots" because you need a small amount, not a blob of it. it's super important not to use too much. After that I pat it out all over under my eye with my ring finger. Once it's all spread out, if it's still quite blue, you have too much. at this point I see a shiny/sticky appearance, but not blue or aurora. Next, I apply matte BB cream and use the same patting out technique under my eye until desired coverage is achieved. BB cream is then followed by mineral foundation powder and by this point there is zero stickiness, my make up holds up well throughout the day with no creasing and maintaining a smooth appearance. I hope this helps.
T**U
lackluster
Product is incredibly sticky, messes with my concealer. I don't notice any difference after repeated use for over a month. Also the product went on sale right after i bought it. Save your money and time, I wish I had.
J**A
Crows feet be gone!
A MUST have in my routine. My under eyes and crows feet are better than when I was in my 20’s. This magically smooths out the super dry undereyes I have, and have reversed time. I always wanted under eye injections, but after starting to use this 5 years ago, haven’t thought twice about it. It does have an iridescent finish, but I’ll take that over dry undereyes.
M**A
Felt Nice at First, But Not Worth It for Me
I tried this under eye serum because I’ve been dealing with dark circles and a bit of puffiness, especially in the mornings. The texture feels silky and lightweight, and it applies smoothly under the eyes without feeling greasy. At first, I liked how hydrating it felt and it gave a slight plumping look right after applying. It also sits well under makeup and doesn’t cause any irritation, which was a plus for my sensitive skin. But after using it for a while, I didn’t really see much improvement in dark circles or fine lines. For the price, I expected more noticeable results. It feels more like a temporary cosmetic effect rather than something that actually changes the skin long term. Overall, it was okay to try, but I wouldn’t repurchase it.
J**A
Worth it!
I am a huge fan of this under eye cream. I purchased it to address dark circles, and I have definitely seen an improved difference in the hydration and color under my eyes.. Easy to apply, just a small dab is enough for under both eyes. It is a thicker than other under eye creams, almost gel like, but it does not feel heavy at all. It gets completely absorbed into the skin. And there is no funky smell. It seems a little expensive, but the small tube lasts quite a long time and is definitely an effective product. I definitely recommend this Cosmedix under eye brightening cream.
A**R
Four Stars
GREAT PRODUCT - GOOD PRICE AND PROTECTIVE SHIPPING
T**N
Great product
Just started using this and I'm beginning to see some improvement in my dark circles under my eyes. Glad I found this!
S**2
Leaked and not sealed
UPDATE- I spoke to Cosmedix and they confirmed that it is legit product, plus Amazon replaced the one that arrived leaking. At this price the Opti Crystal is a bargain price. You only use a pinprick amount so it lasts for months and is a highly effective eye product. My review has now changed to 5 stars. Original review: I’ve purchased this product previously from a different retailer and know it’s great. But this Opti Crystal arrived with neither the tube or box protected with any kind of seal. The product has also leaked into the lid. It feels like someone has previously opened and tried it before returning. Either way it feels unhygienic. I’m returning and requested a replacement. I’m also going to check with Cosmedix on how it should be packaged. (Opti Crystal I’d usually around £90, so if legit this is a bargain price, or it could be too good to be true. I’ll update when I find out more from Cosmedix.)
W**Y
Liquid unicorn tears - best eye serum ever
I’ve used this product for years and it’s turned back the tide on crows feet - they are demonstrably less prominent now at 53 than they were at 47 when I started using it. Other reviews are true - you only need a tiny bit and it is quite sticky. I dot it under my eyes and leave for a minute while I do something else, give it a moment for body heat to kick in. Then dot it around the area - no dragging necessary if it’s warmed up a little. I don’t use skin coverage so I can’t comment how foundation or eye cream sits. I’m naughty and use twice a day and have to hold myself back from using more than I need. Tube last 4 months. RRP is around $180 but if you shop around, can get for $106-$115 to $140. Record was $98. This is a must have and I dread eventual retirement when I’ll have to face up to if I can afford it or not! I’ve tried other eye serums/creams which have done nothing but smell nice and be a bit moisturising.
E**A
Fantastic Result
I have been using Opti Crystal for only 2 weeks, incorporated on my night time skin routine -- the result has me pleasantly surprised and absolutely pleased! The skin under my eyes is now super smooth and visibly hydrated. No wonder the rave reviews for this product are kept coming. I used a few other eyecream brands before, nothing compares to Opti Crystal. It is the best and I am hooked :)
S**E
Tube non scellé
Il est dommage que pour le prix, la boite ne soit pas scellée ou qu'il n'y ait pas un opercule sur le tube. Impossible de savoir si le tube a déjà été ouvert (ce qui le rendrait efficace moins longtemps), ou si le produit n'a pas été testé (il pourrait manquer du produit). Au prix particulièrement élevé de la crème, nous devrions pouvoir être sûr qu'il soit neuf. J'ai vraiment un doute sur le mien car la pointe transparente est arrivée colorée par le produit. C'est dommage, car ce produit semble prometteur !
S**.
I ordered and paid for Opti-Crystal & received Eye Genius!!!
I ordered and paid for Opti-Crystal £93. Instead I received Eye Genius!!! Genius is between £50- £75. Very disappointed to receive the wrong item, I did not notice on time because it looks exactly the same as the tube pictured and opened it before noticing the name at the bottom is wrong.
Trustpilot
5 days ago
2 weeks ago