---
product_id: 190378695
title: "Xtra 4, Nail Strengthener for Weak and Damaged Nails, 0.5 oz, 2-Pack"
brand: "nail tek"
price: "€ 54.73"
currency: EUR
in_stock: true
reviews_count: 13
category: "Nail Tek"
url: https://www.desertcart.hr/products/190378695-xtra-4-nail-strengthener-for-weak-and-damaged-nails-0
store_origin: HR
region: Croatia
---

# Infused with essential oils & moisturizers Concentrated calcium formula for max strength Protects against peeling, cracks & chips Xtra 4, Nail Strengthener for Weak and Damaged Nails, 0.5 oz, 2-Pack

**Brand:** nail tek
**Price:** € 54.73
**Availability:** ✅ In Stock

## Summary

> 💅 Elevate your nail game—because weak nails are so last season!

## Quick Answers

- **What is this?** Xtra 4, Nail Strengthener for Weak and Damaged Nails, 0.5 oz, 2-Pack by nail tek
- **How much does it cost?** € 54.73 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/190378695-xtra-4-nail-strengthener-for-weak-and-damaged-nails-0)

## Best For

- nail tek enthusiasts

## Why This Product

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

## Key Features

- • **All-Day Nail Armor:** Shield your nails from everyday damage—peeling, cracking, and chipping become a thing of the past.
- • **Therapeutic Oil Infusion:** Restore and hydrate with a unique blend of essential oils that nourish cuticles and promote healthy growth.
- • **Power-Packed Calcium Boost:** Fortify fragile nails with a clinically proven calcium complex that rebuilds from within.
- • **Salon-Approved & Cruelty-Free:** Award-winning formula trusted by professionals and made ethically in the USA for guilt-free beauty.
- • **Double the Strength, Double the Confidence:** Two convenient 0.5 oz bottles ensure you never run out of your secret weapon for flawless nails.

## Overview

Nail Tek Xtra 4 is a professional-grade nail strengthener designed specifically for weak and damaged nails. Featuring a concentrated calcium formula combined with essential oils and moisturizers, it repairs, protects, and promotes stronger, healthier nails. This 2-pack offers lasting value and is celebrated by salon professionals as a top natural nail treatment, all while being 100% cruelty-free and made in the USA.

## Description

desertcart.com : Nail Tek Xtra 4, Nail Strengthener for Weak and Damaged Nails, 0.5 oz, 2-Pack : Beauty & Personal Care

Review: This is my holy grail - I’ve been using this stuff for decades after a nail tech literally forced me to buy it after removing my acrylic nails. I’m not exaggerating when I say my paper thin, weak nails did NOT break and had some length to them even after removing acrylics. This stuff is pure magic. Make sure to follow the instructions- one coat a day for a week, remove and repeat. I’ve been using it again for a couple weeks after DESTROYING my natural nails by using too much glue with press-on’s, and it’s helped tremendously. (See pic taken today) My nails WILL grow but, due to an autoimmune disease they aren’t very strong and will break/peel unless I use this stuff. Highly recommend for damaged/hard to grow nails. 💅 🙌🏻
Review: This product works, worth it - This is a great value for what you get. Two nail strengtheners that actual work. The coating stays on even with extreme work. I was able to have mine stay on for about a week before it started to peal off or get damaged and I work with a lot of tools. It also helps keep your nails looking clean and nice while it does the work strengthening and growing your nails. This also helps me not bite my nails knowing there is someone on it. Overall great product and I’m seeing a difference in my nails.

## Features

- Keep your thin nails strong and protected! Nail Tek Xtra 4 is a highly effective treatment designed for nails resistant to conventional therapies. Use this concentrated formulation to provide extra strength to your nails and to correct very severe nail weakness.
- Prevent nails from peeling, cracks, chips, and unsightly ridges! This product has brought forth a way to apply calcium to the nails. Perfect nail treatment to ensure top-tier effectiveness which promotes firm stronger nails that you can work with any time, any day.
- Repair your nails! This therapeutic strengthener is a unique blend of essential oils and moisturizers that restore and protect damage-free cuticles and nails.
- Never run out of your top-pick go-to nail treatment! Get your nails strong and in tip-top form with Nail Tek Xtra 4 that comes in 2 packs! Great for protecting your nails while they grow out! Enjoy constant manicures or pedicures without worrying about the health of your nails.
- Made in the USA and Award-winning! NailTek is voted as “Best Natural Nail Treatment” by Salon Professionals! The go-to brand for products that treat, shape, and strengthen natural nails as well as beautify hands. All products are 100 % cruelty-free to deliver naturally improved nail results!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B07X2N22SF |
| Best Sellers Rank | #15,814 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #30 in Nail Strengtheners |
| Customer Reviews | 4.4 4.4 out of 5 stars (7,157) |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 55811 |
| Manufacturer  | Nail Tek |
| Package Dimensions  | 4 x 3.25 x 2 inches; 0.5 ounces |
| UPC  | 709967558110 |

## Product Details

- **Brand:** Nail Tek
- **Item Form:** Gel
- **Item Weight:** 0.5 Ounces
- **Liquid Volume:** 0.5 Fluid Ounces
- **Specialty:** Repair,Damaged,Strengthener

## Images

![Xtra 4, Nail Strengthener for Weak and Damaged Nails, 0.5 oz, 2-Pack - Image 1](https://m.media-amazon.com/images/I/611vbU65rVL.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the difference between Xtra and #4 for difficult nails?**
A: Xtra and #4 are the same thing, but at one point, they switched from calling it just Xtra, to including it in the numbering scheme they had for the other three formulas. If you look at the box for #4, smaller on the front, it says Xtra.

**Q: In tek guide says after applying layer of Tek apply  polish and then apply Tek within to seven days how many layers will be then?**
A: I am using the ridge filler. I apply NailTek, then 2 layers of color (I use sheer, deep color my require just one coat) and finish with a quick drying top coat weekly. I do not add more layers.

**Q: How do i get this out of clothing?**
A: It is like a nail polish.  You can use either an acetone or non-acetone nail polish remover.  I use the non-acetone remover to remove it from my nails.  You will need to test it on a hidden part of the fabric as it is  very likely that it will affect dyes in the cloth or even attack the fabric if it is a synthetic.

**Q: Is it necessary to use both the nail tek protection plus iii & nail tek (4) strengthner ?**
A: I'm not sure if you need both.  I tried the (4) strengthener and it really didn't help my nails.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is my holy grail
*by J***O on February 18, 2026*

I’ve been using this stuff for decades after a nail tech literally forced me to buy it after removing my acrylic nails. I’m not exaggerating when I say my paper thin, weak nails did NOT break and had some length to them even after removing acrylics. This stuff is pure magic. Make sure to follow the instructions- one coat a day for a week, remove and repeat. I’ve been using it again for a couple weeks after DESTROYING my natural nails by using too much glue with press-on’s, and it’s helped tremendously. (See pic taken today) My nails WILL grow but, due to an autoimmune disease they aren’t very strong and will break/peel unless I use this stuff. Highly recommend for damaged/hard to grow nails. 💅 🙌🏻

### ⭐⭐⭐⭐⭐ This product works, worth it
*by C***K on December 13, 2025*

This is a great value for what you get. Two nail strengtheners that actual work. The coating stays on even with extreme work. I was able to have mine stay on for about a week before it started to peal off or get damaged and I work with a lot of tools. It also helps keep your nails looking clean and nice while it does the work strengthening and growing your nails. This also helps me not bite my nails knowing there is someone on it. Overall great product and I’m seeing a difference in my nails.

### ⭐⭐⭐⭐ Really works!!
*by T***Y on January 20, 2025*

I recently had my artificial nails that I’ve had for many years removed. My original nails were left looking a horrible mess and I had no idea what to do. I decided to try this product and I was pleasantly surprised with the results. After several coats over 2 days it filled in the ridges and left my nails with a high glossy finish. I would definitely recommend this product to anyone looking for something to help repair badly damaged nails. I wish I had taken pics before applying, however I’m posting pictures after using for 2 days. My reason for the 4 star review is because the odor is quite strong.

## Frequently Bought Together

- Nail Tek Nail Strengthener - 0.5oz (Pack of 2)
- Nail-Aid Keratin 3 Day Growth Nail Treatment & Strengthener, Clear, 0.55 Fl Oz
- NAIL-AID Biotin Ultimate Strength, Clear, 0.55 Fluid Ounce

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---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-17*