Do you put a concealer on top?

Yes, the optic crystal serum serves as a wonderful base to keep the concealer from looking dry and increasing the look of fine lines.

How many times a day should i use it (am & pm)?

Once a day or even ever other day…..

Is this real? why is it half the cost of the same product on the manufacturer's website?

I was directed COSMEDIX's Amazon store to purchase the Opti Liquid Crystal Eye Serum ($95) by using a link in an article I read about it on the InStyle magazine website. The article also included a link to the COSMEDIX's own website as well (price was $104 there). I don't believe that InStyle magazine would be publishing links on their website to Amazon sellers that were selling counterfeit (read ILLEGAL & DANGEROUS) products. Also I'm quite sure whenever those type of review/promotional articles are written about products on these websites - the companies are very much aware of the article being published and any links to their products in said articles. So I wouldn't worry about the legitimacy of this particular product. Hope this helps!!

How many applications are in the tube

I use this product at bedtime and 1 tube lasts about 4 months. It only takes a very small amount (less than the size of sesame seed) to get excellent results.

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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

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

Product ID: 26721315

Details

Scent
Coconut
Skin Type
All
Special Ingredients
Antioxidants
Use for
Face

🌿Powerful antioxidants & clean, cruelty-free formula

💧Ultra-hydrating liquid crystal serum

🕒Long-lasting use with tiny pin-sized drops

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VT32534

Duties & taxes included

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Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Scent
Coconut
Skin Type
All
Special Ingredients
Antioxidants

Description

✨ Unlock your eyes’ true potential with every drop!

FINE LINE FIGHTER - Smooths and firms delicate skin to diminish wrinkles and crow’s feet with antioxidant-rich ingredients.
DAY NIGHT POWER DUO - Versatile AM/PM serum that layers seamlessly under makeup without stickiness or creasing.
CLEAN BEAUTY COMMITMENT - 100% cruelty-free, gluten-free, and crafted with pure, skin-loving ingredients for guilt-free glow.
HYDRATE BRIGHTEN INSTANTLY - Delivers deep moisture with liquid crystal tech for a refreshed, radiant eye area all day.
TARGET DARK CIRCLES PUFFINESS - Clinically formulated to visibly reduce under-eye bags and discoloration for a well-rested look.

COSMEDIX Opti Crystal Under Eye Serum is a luxurious, ultra-hydrating liquid crystal formula designed to brighten, firm, and smooth the delicate eye area. Infused with antioxidants like Spin Trap and Alpha Lipoic Acid, it targets dark circles, puffiness, fine lines, and wrinkles. Suitable for all skin types and both day and night use, this clean, cruelty-free serum delivers lasting hydration and a youthful, radiant appearance with minimal product needed per application.

Specifications

ASIN	B01CPSP7PM
Best Sellers Rank	#50,522 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #128 in Eye Treatment Serums
Brand	COSMEDIX
Brand Name	COSMEDIX
Customer Reviews	4.2 out of 5 stars 212 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	0.2 Ounces
Manufacturer	COSMEDIX
Manufacturer Part Number	8770310
Material Features	Antioxidant
Material Type Free	Gluten Free
Model Number	931402010
Number of Items	1
Product Benefits	Encourages the appearance of firmer skin, helps fight harmful free radicals, and provides deep, lasting hydration. Product Benefits Encourages the appearance of firmer skin, helps fight harmful free radicals, and provides deep, lasting hydration. See more
Recommended Uses For Product	dermatology
Scent	Coconut
Scent Name	Coconut
Skin Tone	All
Skin Type	All
Special Ingredients	Antioxidants
Target Use Body Part	Face
UPC	847137020200 847137052652
Use for	Face
Warranty Description	Warranty

Reviews

み**や

5.11.2023

A**L

27.03.2018

A**A

20.02.2026

B**L

16.09.2025

M**.

19.07.2024

J**A

18.09.2025

E**R

2.09.2022

A**R

28.05.2018

S**2

16.09.2022

W**Y

1.06.2022

E**A

14.01.2021

S**E

1.03.2024

S**.

13.10.2020

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