---
product_id: 509578356
title: "20% Vitamin C Serum, 30ml | With Vitamin E & Ferulic Acid | Glowing & Brightening Skin | Anti-Aging Serum for Wrinkles, Fine Lines & Dark Spots | All Skin Types | 30-Days Pack"
brand: "cos-iq"
price: "62.81 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Cos Iq"
url: https://www.desertcart.tn/products/509578356-20-vitamin-c-serum-30ml-with-vitamin-e-and-ferulic
store_origin: TN
region: Tunisia
---

# Protects against UVA/UVB & pollution 20% pure Vitamin C serum concentration 41% reduction in oxidative damage 20% Vitamin C Serum, 30ml | With Vitamin E & Ferulic Acid | Glowing & Brightening Skin | Anti-Aging Serum for Wrinkles, Fine Lines & Dark Spots | All Skin Types | 30-Days Pack

**Brand:** cos-iq
**Price:** 62.81 DT
**Availability:** ✅ In Stock

## Summary

> ✨ Glow like you mean it — because your skin deserves the spotlight!

## Quick Answers

- **What is this?** 20% Vitamin C Serum, 30ml | With Vitamin E & Ferulic Acid | Glowing & Brightening Skin | Anti-Aging Serum for Wrinkles, Fine Lines & Dark Spots | All Skin Types | 30-Days Pack by cos-iq
- **How much does it cost?** 62.81 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/509578356-20-vitamin-c-serum-30ml-with-vitamin-e-and-ferulic)

## Best For

- cos-iq enthusiasts

## Why This Product

- Trusted cos-iq brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Age Gracefully:** Visibly reduces fine lines, wrinkles & dark spots for a youthful bounce
- • **All-Day Defense:** Powerful antioxidants protect against UV rays, pollution & oxidative stress
- • **Shield Your Glow:** Synergistic Vitamin E & Ferulic Acid combo cuts environmental damage by 41%
- • **Radiance Reloaded:** Potent 20% Ethylated Vitamin C brightens and smooths skin fast
- • **Lightweight Luxury:** Non-greasy, fast-absorbing formula perfect for all skin types and busy lifestyles

## Overview

Cos-IQ 20% Vitamin C Serum is a scientifically formulated anti-aging powerhouse combining 20% pure ethylated Vitamin C with Vitamin E and Ferulic Acid. This 30ml serum delivers visible improvements in skin brightness, elasticity, and tone while reducing wrinkles, fine lines, and dark spots. Clinically proven to reduce oxidative damage from UV rays and pollution by up to 41%, it’s a lightweight, fast-absorbing solution designed for all skin types to achieve radiant, youthful skin in just 30 days.

## Description

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Review: Cos-IQ 20% Vitamin C Serum - This product is lightweight and easy to use.All tone skin .and quality is fabulous.no skin irritation.buy it
Review: Removed dull skin - The best vitamin c serum , removed my full skin and tan . And spot reduction

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BTR7SNV1 |
| Active Ingredients | Vitamin-C (3-O-Ethyl Ascorbic Acid) Ethylated Ascorbic Acid |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #9,244 in Beauty ( See Top 100 in Beauty ) #288 in Serums |
| Brand | COS-IQ |
| Country of Origin | India |
| Customer Reviews | 4.0 out of 5 stars 376 Reviews |
| Item Dimensions | 20 x 20 x 30 Millimeters |
| Item Form | Gel |
| Item Type Name | Serum |
| Item Volume | 30 Millilitres |
| Item Weight | 30 Grams |
| Item dimensions L x W x H | 20 x 20 x 30 Millimeters |
| Manufacturer | Cos-IQ®, R.I. Ayurveda Research Labs, Dilshad Garden Industrial Area, G.T. Road, Delhi 110095 |
| Manufacturer Contact Information | R.I. Ayurveda Research Labs, Dilshad Garden Industrial Area, G.T. Road, Delhi 110095 |
| Manufacturer Part Number | CEF20 |
| Material Features | Natural |
| Material Type Free | (MEA/DEA/TEA), Silicones, Mineral Oils Free, Paraben Free, Phthalate Free, Sodium Lauryl Sulfate Free, Sulfate Free |
| Model Number | CEF20 |
| Number of Items | 1 |
| Other Special Features of the Product | Dermatologically Tested, High-Dose Vitamin C, Not Tested On Animals, Unscented |
| Packer Contact Information | Inlabs Lifesciences Pvt Ltd., Delhi 110095, Email: care@mycosiq.com |
| Product Benefits | Improves skin texture, brightens, reduce dark spots |
| Recommended Uses For Product | Dark Spots, Wrinkles |
| Scent | Unscented |
| Skin Type | All, Combination, Normal, Oily, Sensitive |
| Special Feature | Dermatologically Tested, High-Dose Vitamin C, Not Tested On Animals, Unscented |
| Target Use Body Part | Face |
| Unit Count | 30.0 Milliliters |

## Product Details

- **Active Ingredients:** Vitamin-C (3-O-Ethyl Ascorbic Acid) Ethylated Ascorbic Acid
- **Age Range (Description):** Adult
- **Brand:** COS-IQ
- **Item Form:** Gel
- **Item Volume:** 30 Millilitres
- **Item dimensions L x W x H:** 20 x 20 x 30 Millimeters
- **Number of Items:** 1
- **Scent:** Unscented
- **Skin Type:** All, Combination, Normal, Oily, Sensitive
- **Special Feature:** Dermatologically Tested, High-Dose Vitamin C, Not Tested On Animals, Unscented

## Images

![20% Vitamin C Serum, 30ml | With Vitamin E & Ferulic Acid | Glowing & Brightening Skin | Anti-Aging Serum for Wrinkles, Fine Lines & Dark Spots | All Skin Types | 30-Days Pack - Image 1](https://m.media-amazon.com/images/I/61+6dlYbJAL.jpg)

## Questions & Answers

**Q: What is the percentage of Niacinamide in this serum?**
A: It contains 20%EAA ethylated ascorbic acid, 1% Alpha Tocopherol & .5% Ferulic acid, it's ingredients is showing niacinamide but there isn't any percentage of same...

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cos-IQ 20% Vitamin C Serum
*by R***A on 3 May 2026*

This product is lightweight and easy to use.All tone skin .and quality is fabulous.no skin irritation.buy it

### ⭐⭐⭐⭐⭐ Removed dull skin
*by M***I on 13 May 2026*

The best vitamin c serum , removed my full skin and tan . And spot reduction

### ⭐⭐⭐⭐ Happy
*by L***A on 21 September 2025*

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.

## Frequently Bought Together

- Cos-IQ 20% Vitamin C Serum, 30ml | With Vitamin E & Ferulic Acid | Glowing & Brightening Skin | Anti-Aging Serum for Wrinkles, Fine Lines & Dark Spots | All Skin Types | 30-Days Pack
- Cos-IQ 20% Niacinamide Face Serum For Clear Glowing Skin, Bright Skin, Reduces Dullness, Hydrates & Repairs Skin with Vit B3 & Hyaluronic Acid for Targets Acne Marks | For Women & Men | 30ml
- Cos-IQ CPM 2% Ceramides Moisturizer with Peptides for Intense Moisturizing and Skin Strengthening | Barrier Repair Cream | For Oily, Dry, Normal & Sensitive Skin | 100ml

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-03*