---
product_id: 50539143
title: "Scientifique K Plus Nail Hardener, 5 ml"
brand: "mavala"
price: "€ 39.89"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mavala"
url: https://www.desertcart.fi/products/50539143-scientifique-k-plus-nail-hardener-5-ml
store_origin: FI
region: Finland
---

# Formaldehyde-free, gentle formula Strengthens nails with PRO Keratin Prevents splitting & flaking Scientifique K Plus Nail Hardener, 5 ml

**Brand:** mavala
**Price:** € 39.89
**Availability:** ✅ In Stock

## Summary

> 💅 Unlock your strongest nails yet—because your hands deserve the best!

## Quick Answers

- **What is this?** Scientifique K Plus Nail Hardener, 5 ml by mavala
- **How much does it cost?** € 39.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/50539143-scientifique-k-plus-nail-hardener-5-ml)

## Best For

- mavala enthusiasts

## Why This Product

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

## Key Features

- • **Gentle Yet Effective:** Formulated without harsh formaldehyde for safe, everyday use
- • **Flake & Split Defense:** Stops nail damage before it starts—no more embarrassing breaks
- • **Fast-Absorbing Formula:** Penetrates quickly to restore natural nail growth
- • **Trusted French Innovation:** A cult-favorite nail hardener with 11,000+ glowing reviews
- • **Power-Packed PRO Keratin Boost:** Fortifies nails from within for lasting strength

## Overview

Mavala Scientifique K Plus Nail Hardener is a 5 ml solution infused with PRO Keratin that penetrates the nail plate to prevent splitting and flaking. This formaldehyde-free formula strengthens soft, fragile nails, promoting healthy, natural growth. Trusted by thousands, it’s a fast-absorbing, gentle treatment designed for regular use to restore and maintain nail resilience.

## Description

Product Description NEW!! Penetrating nail hardener that acts on the natural keratinization of the nail plate to prevent splitting and flaking. Indications To harden nails. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Ingredients Water (Aqua), Dimethyl Urea, Alcohol, PPG-26-Buteth-26, Sodium Laureth Sulfate, Disodium Phosphate, PEG-40 Hydrogenated Castor Oil, Allium Sativum (Garlic) Bulb Extract, Chamomilla Recutita (Matricaria) Flower Extract, Citrus Limon (Lemon) Peel Oil, Eucalyptus Globulus Leaf Oil, Pistacia Lentiscus (Mastic) Gum, Caprylic/Capric Triglyceride, Cocamidopropyl Betaine, Ethylhexylglycerin, Phenoxyethanol, Ammonium Hydroxide, Benzoic Acid, Citric Acid, Sodium Benzoate, Sodium Chloride, Blue 1 (CI 42090), Limonene, Citral. [F995/1] Directions Apply the product from the center to the tip of the nail. Avoid touching the cuticles and perimeter Let it penetrate for 1 minute by holding hands down so that it does not run on cuticles. Use 2-3 times a week until you get your desired nails. Then, or applications months only. Safety Warning External use See more

Review: Perfect nails - Fabulous for nails that keep breaking. After using this my nails are really strong and no longer break.
Review: Use every day to start with, it really works! - This really works! I had a damaged thumb nail that has been splitting since 2010. I had tried lots of different products, but resigned myself to keeping that nail painfully short just so it didn’t catch on anything. It was a nuisance. Tried Mavala without any real hope and it worked! Stopped using it and the problem returned. So then I used it every day for a week, now once a week is enough to keep the nail healthy.

## Features

- Mavala Scientifique K+ allows soft, flaking or splitting nails to become healthy and strong
- It's formula hardens the nail plate so that the nail can restore it's normal growth
- Infused with PRO Keratin
- Formulated without formaldehyde.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076DJRBFP |
| ASIN  | B076DJRBFP |
| Batteries | Unknown batteries required. |
| Batteries  | Unknown batteries required. |
| Best Sellers Rank | 5,844 in Beauty ( See Top 100 in Beauty ) 13 in Nail Strengthening |
| Brand | MAVALA |
| Country of origin  | France |
| Customer Reviews | 4.4 4.4 out of 5 stars (11,588) |
| Customer reviews | 4.4 4.4 out of 5 stars (11,588) |
| Date First Available | 17 Mar. 2014 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Format | Solution |
| Is discontinued by manufacturer  | No |
| Item dimensions L x W x H | 25 x 25 x 70 millimetres |
| Item model number | 99501 |
| Item model number  | 99501 |
| Item weight | 5 Grams |
| Language | French |
| Language  | French |
| Manufacturer | Mavala |
| Manufacturer  | Mavala |
| Package Weight | 0.03 Kilograms |
| Package dimensions | 6.7 x 3.4 x 3.3 centimetres |
| Product Dimensions | 2.54 x 2.54 x 6.99 cm; 5 g |
| Product Dimensions  | 2.54 x 2.54 x 6.99 cm; 5 g |
| Skin type | normal |
| Speciality | Strengthening and Hardening Nails |
| Volume | 5 Millilitres |

## Product Details

- **Brand:** MAVALA
- **Global Trade Identification Number:** 07618900995017
- **Item form:** Solution
- **Item weight:** 5 Grams
- **Liquid volume:** 5.0
- **Manufacturer:** Mavala
- **Number of items:** 1
- **Size:** 5 ml (Pack of 1)
- **Speciality:** Strengthening and Hardening Nails
- **Unit count:** 5.0 millilitre(s)

## Images

![Scientifique K Plus Nail Hardener, 5 ml - Image 1](https://m.media-amazon.com/images/I/61EE+Cp04OL.jpg)

## Questions & Answers

**Q: I normally buy the mavala stop biting nails to help my son, does this one do the same (help stop biting nails) and if not can u use them both together**
A: Does not do the same thing, this is a nail hardener only. Would have thought you could possibly use them in conjunction, though cannot see what the point of that would be.

**Q: I bite my nails and now they are growing they break easy, so would this help strengthen them as they grow**
A: Yes I believe so, I bit my nails for about 20 years and they were thin when I allowed them to grow. This will make them less brittle and then I noticed my nails becoming thicker after growing out for a cycle or 2

**Q: Does this soak into the nail or leave a layer of nail varnish?**
A: It soaks into the nail leaving no trace.  It is excellent for strengthening nails along with OPI nail strengthener 2 coats on top .

**Q: Is this meant to smell absolutely awful? I either have one out of a bad batch/out of date or it’s just meant to smell absolutely awful!?**
A: It does smell a bit but once it dries on your nails it’s fine. Try not to smell it!!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect nails
*by J***N on 23 December 2025*

Fabulous for nails that keep breaking. After using this my nails are really strong and no longer break.

### ⭐⭐⭐⭐⭐ Use every day to start with, it really works!
*by A***R on 30 January 2026*

This really works! I had a damaged thumb nail that has been splitting since 2010. I had tried lots of different products, but resigned myself to keeping that nail painfully short just so it didn’t catch on anything. It was a nuisance. Tried Mavala without any real hope and it worked! Stopped using it and the problem returned. So then I used it every day for a week, now once a week is enough to keep the nail healthy.

### ⭐⭐⭐⭐ Good stuff
*by F***N on 26 December 2025*

Have used this for years. It’s good stuff, but of course has to be used forever basically. Delivered quickly especially so given the Christmas rush.

## Frequently Bought Together

- MAVALA Scientifique K+ Keratin Hardener Strengthener | Protect Nails | Avoid Breaking and Splitting | Supports Natural Keratinization | Multi-color, 0.16 Fl Oz
- Mavala Nail Care Nailactan Nutritive, Nail Cream In Jar, Supports Damaged Nails, Nourishing, Moisturizing Nail Care Cuticle Cream, Promotes Nail Growth, 0.5 Ounce Jar
- MAVALA Mava-Strong Fortifying Base Coat | Healthy Nails | Strengthens and Protects Damaged Nails | Reduces Micro-Flaking and Dehydration | Colorless, Shiny 0.3 Ounce

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---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-09*