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✨ Glow like you mean it — your skin’s new power move!
COS-IQ’s 20% Vitamin C Face Serum combines high-potency L-Ascorbic Acid with Vitamin E and Ferulic Acid to deliver advanced antioxidant protection, reducing oxidative damage by up to 41%. This 30ml lightweight, unscented gel serum visibly brightens skin, diminishes fine lines and wrinkles, and fades dark spots, making it an essential daily defense against environmental aging for all skin types.
| ASIN | B0BTR7SNV1 |
| Active Ingredients | vitamin_c |
| Age Range Description | Adult |
| Age range (description) | Adult |
| Best Sellers Rank | #166,384 in Beauty ( See Top 100 in Beauty ) #1,559 in Face Astringents & Toners |
| Brand | COS-IQ |
| Brand Name | COS-IQ |
| Customer Reviews | 4.1 out of 5 stars 321 Reviews |
| Item Dimensions | 20 x 20 x 30 millimeters |
| Item Form | Gel |
| Item Volume | 30 Milliliters |
| Item Weight | 30 Grams |
| Item dimensions L x W x H | 20 x 20 x 30 millimeters |
| Item volume | 30 Milliliters |
| Manufacturer | Cos-IQ® |
| Manufacturer Part Number | CEF20 |
| Model Number | CEF20 |
| Number of Items | 1 |
| Other Special Features of the Product | Unscented |
| Scent Name | Unscented |
| Skin Type | All |
| Special features | Unscented |
| Specific Uses For Product | Dark Spots, Wrinkles |
| Unit Count | 30.0 Milliliters |
V**T
Noticeable Glow and Smooth Skin in Just a Week!
I've been using the COSIQ Vitamin CEF-20% Face Serum for a week now, and I'm genuinely impressed. The texture is lightweight and absorbs quickly without leaving any greasy residue. Within a few days, I noticed my skin looking brighter and more radiant. The serum claims to reduce dark spots and hyperpigmentation, and I can already see a slight improvement in my uneven skin tone. My fine lines also look a bit softer, and my skin feels more elastic and hydrated. I especially love that it uses Ethylated Ascorbic Acid – it's gentle but effective. Overall, a great product if you're looking for brighter, healthier-looking skin. Definitely worth trying!
M**I
Removed dull skin
The best vitamin c serum , removed my full skin and tan . And spot reduction
L**A
Happy
Happy with the results of this serum. Protects skin from dryness. Very effective for dry skin and texture of serum is good blends well into skin and fragrance is good.
S**Y
Worst
Worst ever serum got rashes and itching
R**I
Good product, bad packaging.
What I like: 1. it doesn't make my oily skin any oilier 2. Airless pump packaging 3. usage of ethyl ascorbic acid which is both water n fat soluble 4. I have been using it for a month now and it works well What could be improved: 1. Plz include the % of niacinamide in the ingredient list , as some of us are allergic to it , at above 2% strength . 2. Plz include the pH of ur products on the packaging, as it wud make layering, daytime vs nighttime usage easier to determine. Update: 1. Leakage of product- The pump packaging does not work well and additional product seeps out from the sides everytime I use the pump. I have noticed the same issue with their other products, which use the same packaging. 2. Product gets oxidised, changes colour and loses efficacy about 3 months after opening it. So store it in d fridge if u want it to last longer. 3. Due to point 1 , I am reducing my rating to 3 stars now.
Trustpilot
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3 weeks ago