---
product_id: 167111853
title: "Foundation Xtra 4, Ridge Filling Strengthening Base Coat for Weak and Damaged Nails, 0.5 oz, 2-Pack"
brand: "nail tek"
price: "€ 47.64"
currency: EUR
in_stock: true
reviews_count: 12
url: https://www.desertcart.gr/products/167111853-foundation-xtra-4-ridge-filling-strengthening-base-coat-for-weak
store_origin: GR
region: Greece
---

# All-natural formula Award-winning treatment Strengthens nails Foundation Xtra 4, Ridge Filling Strengthening Base Coat for Weak and Damaged Nails, 0.5 oz, 2-Pack

**Brand:** nail tek
**Price:** € 47.64
**Availability:** ✅ In Stock

## Summary

> Nail your look with confidence! 💅

## Quick Answers

- **What is this?** Foundation Xtra 4, Ridge Filling Strengthening Base Coat for Weak and Damaged Nails, 0.5 oz, 2-Pack by nail tek
- **How much does it cost?** € 47.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/167111853-foundation-xtra-4-ridge-filling-strengthening-base-coat-for-weak)

## 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

- • **Multipurpose Marvel:** Use as a base or top coat for versatile nail care!
- • **Ultimate Protection:** Say goodbye to yellowing and hello to a flawless finish!
- • **Revitalize Your Nails:** Transform weak, damaged nails into a picture of health!
- • **Salon-Quality Results:** Achieve that professional look right at home!
- • **Cruelty-Free Confidence:** Feel good about your beauty choices with our eco-friendly formula!

## Overview

Nail Tek Foundation Xtra 4 is a powerful ridge-filling base coat designed to restore and strengthen weak and damaged nails. This 0.5 oz, 2-pack product features a concentrated all-natural formula that provides essential strength and protection, making it a favorite among salon professionals. Its multipurpose use allows for both base and top coat applications, ensuring a smooth, beautiful finish while promoting healthy nail growth.

## Description

Nail Tek Foundation Xtra 4, Ridge Filling Strengthening Base Coat for Weak and Damaged Nails, 0.5 oz, 2-Pack

## Features

- Restore & Strengthen Nails: This unique base coat is a special blend of strengtheners, conditioners, micro-fibers, and natural fillers that help strengthen natural nails, fill ridges and restore fragile, damaged nails to their perfect health and shape!
- Concentrated All Natural Formula: Its concentrated formulation gives the extra strength necessary to correct severe nail weakness. Use this to correct severe weak nails and apply in conjunction with Foundation 4 to achieve fast and maximum results!
- Multipurpose Nail Ridge Filler: Apply this as a base coat to make your nails significantly stronger and flawlessly beautiful, or use this as a top coat to achieve that salon-quality nail polish finish while promoting stronger and healthy nail growth!
- Easy-to-use Anti-yellowing Base Coat: To use, simply apply one coat before applying your favorite nail polish for superior polish adhesion, protection from yellowing stains, and an ultra-smooth nail surface.
- Award-Winning Nail Therapy & Made in the USA: Nail Tek has been voted as “Best Natural Nail Treatment” by Salon Professionals! This pro-approved nail strengthener is 100% cruelty-free, DBP-free, and Toluene-free, perfect for restoring natural nails from damage.

## Images

![Foundation Xtra 4, Ridge Filling Strengthening Base Coat for Weak and Damaged Nails, 0.5 oz, 2-Pack - Image 1](https://m.media-amazon.com/images/I/614+WNTCLaL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Ridge Filler
  

*by M***T on Reviewed in the United States on June 22, 2024*

I really like this stuff. It is matte and clear as if you did not even have on any polish.  It will stay on by itself for two or three days. It will stay on longer than that if you continue to add coats of polish to the top.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Helps to retain polish. Not very effective as ridge filler.
  

*by T***Y on Reviewed in the United States on June 28, 2024*

Just okay

### ⭐⭐⭐⭐ 4.0 out of 5 stars







  
  
    It works!
  

*by A***R on Reviewed in the United States on April 14, 2024*

I have been using this for 6 months and my nails are much improved and i am very happy with the results. My issue is that the bottles i had before (used as base coat and top coat) leeft a clear shiny finish. The bottle i just got is a satin finish and not quite clear. I didn’t see where there was a note that they were changing the finish!I want the clear shiny finish!!  How do I get that again??

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**Shop now:** [https://www.desertcart.gr/products/167111853-foundation-xtra-4-ridge-filling-strengthening-base-coat-for-weak](https://www.desertcart.gr/products/167111853-foundation-xtra-4-ridge-filling-strengthening-base-coat-for-weak)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-10*