---
product_id: 71313678
title: "Kiehl's Powerful-Strength 12.5% Vitamin C Serum, Line-Reducing Concentrate for Face, Boosts Radiance & Firmness, Smooths & Plumps Skin, with Hyaluronic Acid, Dermatologist-Tested, Paraben-free"
brand: "kiehl's"
price: "€ 164.96"
currency: EUR
in_stock: true
reviews_count: 8
category: "Kiehl's"
url: https://www.desertcart.com.cy/products/71313678-kiehls-powerful-strength-12-5-vitamin-c-serum-line-reducing
store_origin: CY
region: Cyprus
---

# Vitamin C remains effective up to 6 days 12.5% L-Ascorbic Acid for deep skin penetration 2% renewable Ascorbyl Glucoside + Hyaluronic Acid Kiehl's Powerful-Strength 12.5% Vitamin C Serum, Line-Reducing Concentrate for Face, Boosts Radiance & Firmness, Smooths & Plumps Skin, with Hyaluronic Acid, Dermatologist-Tested, Paraben-free

**Brand:** kiehl's
**Price:** € 164.96
**Availability:** ✅ In Stock

## Summary

> ✨ Unlock your skin’s glow-up with Kiehl’s Vitamin C Powerhouse!

## Quick Answers

- **What is this?** Kiehl's Powerful-Strength 12.5% Vitamin C Serum, Line-Reducing Concentrate for Face, Boosts Radiance & Firmness, Smooths & Plumps Skin, with Hyaluronic Acid, Dermatologist-Tested, Paraben-free by kiehl's
- **How much does it cost?** € 164.96 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/71313678-kiehls-powerful-strength-12-5-vitamin-c-serum-line-reducing)

## Best For

- kiehl's enthusiasts

## Why This Product

- Trusted kiehl's brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pore Perfecter:** Smooths and minimizes pores for a flawless, camera-ready complexion.
- • **Radiance Reboot:** Boost your skin’s natural glow with a potent 12.5% pure Vitamin C infusion.
- • **Wrinkle Warrior:** Clinically shown to visibly reduce fine lines and wrinkles in just 2 weeks.
- • **Long-Lasting Power:** Vitamin C stays active in your skin for up to 6 days, maximizing results.
- • **Clean & Safe Formula:** Dermatologist-tested, paraben-free, and suitable for all skin types—even sensitive.

## Overview

Kiehl's Powerful-Strength 12.5% Vitamin C Serum combines a high concentration of pure L-Ascorbic Acid with renewable Ascorbyl Glucoside and fragmented Hyaluronic Acid to visibly reduce wrinkles, firm skin, and smooth pores. Dermatologist-tested and paraben-free, this serum delivers radiant, youthful skin in just 2 weeks, with Vitamin C remaining effective for up to 6 days post-application. Suitable for all skin types, it’s a must-have for anyone serious about anti-aging skincare.

## Description

desertcart.com: Kiehl's Powerful-Strength 12.5% Vitamin C Serum, Line-Reducing Concentrate for Face, Boosts Radiance & Firmness, Smooths & Plumps Skin, with Hyaluronic Acid, Dermatologist-Tested - 1.7 fl oz : Beauty & Personal Care

Review: Not greasy - Works for my skin making it tighter! Packaged well! Not greasy! Expensive but works
Review: Hands down the best vitamin C serum I've ever tried - I’m the kind of person who loves to explore different skincare products, always on the lookout for that ‘holy grail’ serum that can truly transform my skin. Over the past 10 years, while I’ve rotated countless brands—from high-end options like Sunday Riley and Dr. Dennis Gross to budget finds on desertcart—I’ve always come back to one consistent favorite: Kiehl’s Powerful-Strength 12.5% Vitamin C Serum. In the world of skincare, it's recommended to switch up your products every few months to keep your skin from adapting and becoming less responsive. This practice has led me to try everything from the surprisingly effective yet short-lived Brandefy serum (great on the first go but lost its magic by the second bottle) to La Roche-Posay, which was promising but oxidized way too quickly. Kiehl’s, however, stands out for many reasons. Its silky texture is a pleasure to use, and it boasts one of the highest concentrations of L-ascorbic acid—a hard-to-beat 12.5%! This is the gold standard for vitamin C in skincare, known for its potency and efficacy. My skin absolutely loves it. Regular use has visibly faded sun spots and smoothed out fine lines around my eyes and on my neck. I’ve seen some incredible results, and after all these years, Kiehl's Vitamin C serum remains my go-to. It’s a product I truly believe in and will continue to purchase. For anyone looking to invest in their skin, this serum is a must-try. Trust me, your skin will thank you!

## Features

- This Vitamin C serum boosts radiance, helps firm skin and diminishes fine lines, wrinkles and pores. Formulated with 10.5% L-Ascorbic Acid and renewable 2% Ascorbyl Glucoside plus Hyaluronic Acid. For all skin types.
- Helps visibly reduce lines and wrinkles while helping firm skin over time. Smoothes and helps visibly minimize the appearance of pores. Pure Vitamin C penetrates skin’s deeper surface layers and remains effective in skin for up to 6 days.
- HOW TO USE: After cleansing, apply two pumps over entire face, avoiding the eye area. As it blends into skin, you may experience a feeling of warmth as the formula activates. Avoid the eye area.
- Infused with L-Ascorbic Acid, also known as Pure Vitamin C, a highly efficacious antioxidant known for its ability to improve the appearance of skin aging. Also formulated with Vitamin Cg, or Ascorbyl Glucoside and fragmented Hyaluronic Acid.
- Provides visible results in just 2 weeks. Dermatologist-tested for safety. Formulated for all skin types, including sensitive skin.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B078Y96B22 |
| Best Sellers Rank | #33,632 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #743 in Facial Serums |
| Brand | Kiehl's |
| Brand Name | Kiehl's |
| Customer Reviews | 4.4 out of 5 stars 648 Reviews |
| Item Form | Cream |
| Item Volume | 50 Milliliters |
| Item Weight | 0.07 Kilograms |
| Manufacturer | Kiehl's Since 1851 |
| Material Features | Antioxidant |
| Number of Items | 1 |
| Product Benefits | Infused with L-Ascorbic Acid, also known as Pure Vitamin C, a highly efficacious antioxidant known for its ability to improve the appearance of skin aging. Also formulated with Vitamin Cg, or Ascorbyl Glucoside and fragmented Hyaluronic Acid. Product Benefits Infused with L-Ascorbic Acid, also known as Pure Vitamin C, a highly efficacious antioxidant known for its ability to improve the appearance of skin aging. Also formulated with Vitamin Cg, or Ascorbyl Glucoside and fragmented Hyaluronic Acid. See more |
| Recommended Uses For Product | Provides Vitamins |
| Scent | Unscented |
| Scent Name | Unscented |
| Skin Tone | All |
| Skin Type | Normal |
| Special Ingredients | hyaluronic_acid, vitamin_c, vitamin_e |
| Target Use Body Part | Face |
| Unit Count | 1.7 Ounce |
| Use for | Face |

## Product Details

- **Skin Type:** Normal
- **Product Benefits:** Infused with L-Ascorbic Acid, also known as Pure Vitamin C, a highly efficacious antioxidant known for its ability to improve the appearance of skin aging. Also formulated with Vitamin Cg, or Ascorbyl Glucoside and fragmented Hyaluronic Acid.
- **Use for:** Face
- **Scent:** Unscented
- **Special Ingredients:** hyaluronic_acid, vitamin_c, vitamin_e

## Images

![Kiehl's Powerful-Strength 12.5% Vitamin C Serum, Line-Reducing Concentrate for Face, Boosts Radiance & Firmness, Smooths & Plumps Skin, with Hyaluronic Acid, Dermatologist-Tested, Paraben-free - Image 1](https://m.media-amazon.com/images/I/61BKtEWMIzL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Not greasy
*by W***K on January 10, 2026*

Works for my skin making it tighter! Packaged well! Not greasy! Expensive but works

### ⭐⭐⭐⭐⭐ Hands down the best vitamin C serum I've ever tried
*by G***U on May 14, 2024*

I’m the kind of person who loves to explore different skincare products, always on the lookout for that ‘holy grail’ serum that can truly transform my skin. Over the past 10 years, while I’ve rotated countless brands—from high-end options like Sunday Riley and Dr. Dennis Gross to budget finds on Amazon—I’ve always come back to one consistent favorite: Kiehl’s Powerful-Strength 12.5% Vitamin C Serum. In the world of skincare, it's recommended to switch up your products every few months to keep your skin from adapting and becoming less responsive. This practice has led me to try everything from the surprisingly effective yet short-lived Brandefy serum (great on the first go but lost its magic by the second bottle) to La Roche-Posay, which was promising but oxidized way too quickly. Kiehl’s, however, stands out for many reasons. Its silky texture is a pleasure to use, and it boasts one of the highest concentrations of L-ascorbic acid—a hard-to-beat 12.5%! This is the gold standard for vitamin C in skincare, known for its potency and efficacy. My skin absolutely loves it. Regular use has visibly faded sun spots and smoothed out fine lines around my eyes and on my neck. I’ve seen some incredible results, and after all these years, Kiehl's Vitamin C serum remains my go-to. It’s a product I truly believe in and will continue to purchase. For anyone looking to invest in their skin, this serum is a must-try. Trust me, your skin will thank you!

### ⭐⭐⭐⭐⭐ Its hydrating and helps with wrinkles
*by H***E on September 1, 2025*

Boyfriend loves this stuff. Hydrates around his eyes and keeps wrinkles at bay. Great quality ingredients. Smells nice but not perfume. Pretty expensive for the small bottle size you get but we're ok with that because it does work.

## Frequently Bought Together

- Kiehl's Powerful-Strength 12.5% Vitamin C Serum, Line-Reducing Concentrate for Face, Boosts Radiance & Firmness, Smooths & Plumps Skin, with Hyaluronic Acid, Dermatologist-Tested, Paraben-free
- Kiehl's Ultra Facial Cream, with 4.5% Squalane to Strengthen Skin's Moisture Barrier, Skin Feels Softer and Smoother, Long-Lasting Hydration, Easy and Fast-Absorbing, Suitable for All Skin Types
- Kiehl's Clearly Corrective Dark Spot Serum, Brightening Facial Serum, Reduces Hyperpigmentation & Post-acne Marks, with Vitamin C & Salicylic Acid, All Skin Types, Paraben-free, Mineral Oil-free

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-03*