Cos-IQ 23% Vitamin C Face Serum for Glowing Skin 30ml| Advanced Molecular Skincare Technology | Highly Stable, Non Irritating, Non Sticky| Brightening & Hydrating Formula For Men & Women

The media could not be loaded. I'm incredibly impressed with the Cos-IQ 23% Vitamin C Face Serum! This product truly delivers on its promises. The high concentration of stable Vitamin C (Ethylated Ascorbic Acid) has made a noticeable difference in my skin's radiance and evenness.What I love:Effective Brightening: My skin looks much more luminous and healthy.Non-Irritating & Non-Sticky: Despite the potent formula, it's gentle and absorbs beautifully without any tackiness.Minimal Ingredients: The simple 2-ingredient formula is a huge plus for sensitive skin.If you're looking for a powerful yet gentle Vitamin C serum to boost your glow, look no further. Highly recommend!

I’ve tried a lot of Vitamin C serums before, but most either irritate my skin or don’t show any results. COSIQ’s 23% Vitamin C serum was a pleasant surprise! It’s lightweight, absorbs quickly, and doesn’t feel sticky at all. I’ve been using it for about 3 weeks now, and I can already see my skin looking brighter and more even-toned.What I love most is that it doesn’t have that weird citrus smell or cause any tingling. It works well under sunscreen and makeup too. Definitely recommend it if you’re looking for a high-potency Vitamin C serum that’s still gentle on the skin.

I don't know about other reviews here I'm sharing my experience this serum doesn't absorbs at all.

The CosIQ 23% Vitamin C Face Serum is a solid choice for brightening the complexion. Its lightweight texture absorbs quickly and leaves no sticky residue. After a month of use, I noticed a subtle improvement in my skin’s brightness and some fading of dark spots. The mild citrus scent is pleasant, but the high concentration of vitamin C may be a bit intense for sensitive skin. Overall, it's effective for most skin types, but results take time, so patience is key.

Cos-IQ's Vitamin C serums are well-received for their simplicity and efficacy. The 23% variant is potent and suitable for those looking for noticeable results, while the 8% version is gentler, making it ideal for beginners or those with sensitive skin. As with any skincare product, it's advisable to perform a patch test before full application to ensure compatibility with your skinSuitable for sensitive skin; users appreciated absence of fragrance.​Light, watery texture that feels comfortable on the skin.​Effective in improving skin tone and reducing hyperpigmentation over time.​

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The CosIQ Vitamin C-23% Face Serum is a highly potent Ethylated Ascorbic Acid formula that delivers fast and stable brightening effects. It helps reduce pigmentation, boosts collagen, and evens out skin tone without irritation. The lightweight, non-greasy texture absorbs quickly, making it perfect for daily use. If you’re looking for a high-strength, effective Vitamin C serum, this is a great choice!

The Cos-IQ 8% Vitamin C Face Serum is exactly what I was looking for! As someone new to Vitamin C serums, I appreciate that this formula is beginner-friendly and gentle on the skin. It’s non-irritating, absorbs quickly, and leaves no sticky residue, which is a big plus for me.After a few weeks of use, my skin looks noticeably brighter and more even. It has helped bring a nice glow back to my dull skin without causing any breakouts or sensitivity. I also love that it’s suitable for all skin types and works well under my moisturizer and sunscreen