---
product_id: 659596294
title: "20% Vitamin C Face Serum With Vit E, & Ferulic Acid | Safe and Effective Skin Brightening Serum for Glowing Skin, Protects Against, Wrinkles, Fine Lines, Dark Spots | 30ml"
brand: "cos-iq"
price: "£15.63"
currency: GBP
in_stock: true
reviews_count: 5
category: "Cos Iq"
url: https://www.desertcart.co.uk/products/659596294-20-vitamin-c-face-serum-with-vit-e-and-ferulic
store_origin: GB
region: United Kingdom
---

# 20% Vitamin C Natural ingredients Antioxidant protection 20% Vitamin C Face Serum With Vit E, & Ferulic Acid | Safe and Effective Skin Brightening Serum for Glowing Skin, Protects Against, Wrinkles, Fine Lines, Dark Spots | 30ml

**Brand:** cos-iq
**Price:** £15.63
**Availability:** ✅ In Stock

## Summary

> 🌟 Unlock Your Skin's Brilliance!

## Quick Answers

- **What is this?** 20% Vitamin C Face Serum With Vit E, & Ferulic Acid | Safe and Effective Skin Brightening Serum for Glowing Skin, Protects Against, Wrinkles, Fine Lines, Dark Spots | 30ml by cos-iq
- **How much does it cost?** £15.63 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/659596294-20-vitamin-c-face-serum-with-vit-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

- • **Glow On-the-Go:** Achieve radiant skin effortlessly!
- • **Age-Defying Power:** Combat wrinkles and fine lines with confidence.
- • **Collagen Boosting:** Enhance skin elasticity for a youthful bounce.
- • **Eco-Friendly Formula:** Safe for you and the planet!
- • **Hyperpigmentation Hero:** Say goodbye to dark spots and uneven tone.

## Overview

Cos-IQ 20% Vitamin C Face Serum is a powerful skin brightening solution that combines Vitamin E and Ferulic Acid to combat signs of aging, improve skin tone, and protect against environmental damage. This 30ml serum is designed for both men and women, ensuring a radiant complexion while promoting collagen production and fighting hyperpigmentation.

## Description

Cef Features a Synergistic Antioxidant Combination of 20% Pure Vitamin C (L-Ascorbic Acid), 1% Vitamin E (AlpHa TocopHerol), and 0.5% Ferulic Acid to Enhance Protection Against Environmental Damage Caused by Free Radicals That Can Contribute to AtmospHeric Aging. Cef is Now Proven to Reduce Combined Oxidative Damage Generated by UVA/UVB Rays, Ozone Pollution, and Diesel Engine Exhaust by Up to 41%. in Addition to Antioxidant Protective Benefits, Cef Improves Signs of Aging and pHotodamage, the Appearance of Lines and Wrinkles, and the Loss of Firmness, While Brightening Skin's Complexion. a Patented Daytime Vitamin C Serum That Delivers Advanced Environmental Protection and Improves the Appearance of Fine Lines and Wrinkles, Loss of Firmness, and Brightens Skin's Complexion. The Active Ingredients in the Serum Penetrate the Skin from Within to Lighten the Skin Tone, Giving It a Radiant Look – Revives Skin by Bringing Out Its Natural Radiance. Fights Hyperpigmentation – Hyperpigmentation is Caused Due to Unprotected Sun Exposure. The Antioxidant Properties of Vitamin C Protect Against UV Induced pHotodamage – Antioxidants and Anti-Inflammatory.

Review: Removed dull skin - The best vitamin c serum , removed my full skin and tan . And spot reduction
Review: 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!

## Features

- Visible anti-aging benefits, such as the improvement of the appearance of lines and wrinkles, loss of firmness, and brightens skin’s complexion
- All round skin benefits brightens skin vitamin c in 3-o-ethyl ascorbic acid form has an immense brightening effect. It's formulated to make skin glow by removing blemishes and fine lines. Ethylated ascorbic acid is the most potent form vitamin c thats safe to use and penetrates the skin tone, giving it a radiant look.
- Repairs & rejuvenates fights hyperpigmentation hyperpigmentation is caused due to unprotected sun exposure neutralizes free radicals and prevents inflammatory processes to slow down photoaging that causes pigmentation has a direct effect on hyperpigmentation, age spots & sun spots. The antioxidant properties of vitamin c protect against UV, pollution and environment induced photodamage.
- Natural skin health evens skin tone active in fading pigmentation evens out skin tone protects the skin against premature aging triggered by free radicals that cause oxidative stress helps the skin produce collagen and elastin to make our skin soft and bouncy for both men and women maximum results guaranteed with our star ingredient.
- Package Content: 1 Vitamin C-20% Face Serum; Quantity: 30ml; Item Form: Serum

## Technical Specifications

| Specification | Value |
|---------------|-------|
| 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 |

## Product Details

- **Age range (description):** Adult
- **Brand:** COS-IQ
- **Item dimensions L x W x H:** 20 x 20 x 30 millimeters
- **Item volume:** 30 Milliliters
- **Special features:** Unscented

## Images

![20% Vitamin C Face Serum With Vit E, & Ferulic Acid | Safe and Effective Skin Brightening Serum for Glowing Skin, Protects Against, Wrinkles, Fine Lines, Dark Spots | 30ml - Image 1](https://m.media-amazon.com/images/I/61+6dlYbJAL.jpg)

## Customer Reviews

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

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

### ⭐⭐⭐⭐⭐ Noticeable Glow and Smooth Skin in Just a Week!
*by V***T on 15 June 2025*

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!

### ⭐⭐⭐⭐ 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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**Shop now:** [https://www.desertcart.co.uk/products/659596294-20-vitamin-c-face-serum-with-vit-e-and-ferulic](https://www.desertcart.co.uk/products/659596294-20-vitamin-c-face-serum-with-vit-e-and-ferulic)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-12*