--- product_id: 3078931 title: "Nail Tek Strengthener Xtra 4 Strengthener and Base Coat, 0.5 oz" brand: "nail tek" price: "¥122" currency: JPY in_stock: false url: https://www.desertcart.jp/products/3078931-nail-tek-strengthener-xtra-4-strengthener-and-base-coat-0 store_origin: JP region: Japan --- # Nourishes with natural oils Strengthens brittle nails Protects against peeling & chipping Nail Tek Strengthener Xtra 4 Strengthener and Base Coat, 0.5 oz **Brand:** nail tek **Price:** ¥122 **Availability:** ❌ Out of Stock ## Summary > 💅 Unlock your nails’ true potential—strength, beauty, and resilience in one bottle! ## Quick Answers - **What is this?** Nail Tek Strengthener Xtra 4 Strengthener and Base Coat, 0.5 oz by nail tek - **How much does it cost?** ¥122 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/3078931-nail-tek-strengthener-xtra-4-strengthener-and-base-coat-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 - • **Calcium-Infused Repair:** Delivers essential calcium to rebuild and fortify damaged nails from root to tip. - • **Visible Results in 7 Days:** Experience stronger, longer nails fast—because your hands deserve to impress. - • **Salon-Grade Strength Boost:** Transforms fragile nails into resilient, chip-resistant powerhouses. - • **Natural Nourishment Formula:** A unique blend of essential oils and moisturizers that revitalize and hydrate cuticles. - • **Award-Winning & Cruelty-Free:** Trusted by professionals and ethically made for the conscious consumer. ## Overview Nail Tek Xtra 4 is a concentrated, salon-quality nail strengthener designed specifically for weak, damaged, and hard-to-grow nails. This 0.5 oz treatment combines calcium, essential oils, and moisturizers to repair, protect, and nourish nails and cuticles. Clinically acclaimed and cruelty-free, it delivers visible improvements in nail strength and appearance within one week, making it the go-to solution for professionals and nail care enthusiasts alike. ## Description Nail Tek Xtra 4 is a highly effective treatment designed for nails resistant to conventional therapies. It provides extra strength to your nails and corrects very severe nail weakness. Perfect for thin and peeling nails. Keep your thin nails strong and protected and let the damaged parts grow out! Ideal for weak, damaged nails Promote nail growth and flexibility Nourishes and conditions the nails DBP and Toluene free Made in the USA Weak damaged nails can be a direct result of gel and acrylic nails. Once the artificial nails are removed, the nail bed may appear dry & shocked. The natural nail has been kept from oxygen and has suffered decreased stimulation, so the nail bed and fingernail growth have been stunted. FOR NORMAL, HEALTHY NAILS Look strong, smooth and healthy Grow easily Bend slightly when pressed FOR SOFT, PEELING NAILS Split & peel easily Are weak and soft Bend slightly when pressed Rarely grow past fingertips FOR HARD, BRITTLE NAILS Lack flexibility and moisture. Do not bend Break very easily Appear dull and lack luster May have superficial ridges and flaking free edges FOR WEAK, DAMAGED NAILS Split and peel easily Are weak and soft Bend slightly when pressed Rarely grow past fingertips Treat with one coat of Xtra 4 as a base coat. Color with two coats of your favorite shade of nail polish. Protect with 1 top coat of Xtra 4. Apply daily for seven days to reseal and protect free edges ## Features - For difficult, resistant nails - For previously unsalvageable nails - Designed for nails resistant to conventional therapies - Item Package Dimension: 3.429cm L x 3.556cm W x 8.255cm H ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0006PLOX6 | | Best Sellers Rank | #51 in Nail Strengtheners | | Item Model Number | NK14000 | | Manufacturer | American International Industries | | Product Dimensions | 1.5 x 1.5 x 3 inches; 1.76 ounces | | Upc | 793379185880 802428941442 709967558110 | ## Product Details - **Brand:** Nail Tek - **Item Form:** Gel - **Item Weight:** 1.76 ounces - **Liquid Volume:** 15 ml - **Specialty:** Repair,Damaged,Strengthener ## Images ![Nail Tek Strengthener Xtra 4 Strengthener and Base Coat, 0.5 oz - Image 1](https://m.media-amazon.com/images/I/61Ie2GwS89L.jpg) ![Nail Tek Strengthener Xtra 4 Strengthener and Base Coat, 0.5 oz - Image 2](https://m.media-amazon.com/images/I/61+I5aty2tL.jpg) ![Nail Tek Strengthener Xtra 4 Strengthener and Base Coat, 0.5 oz - Image 3](https://m.media-amazon.com/images/I/61RCKWReVHL.jpg) ![Nail Tek Strengthener Xtra 4 Strengthener and Base Coat, 0.5 oz - Image 4](https://m.media-amazon.com/images/I/61OkA9oZnaL.jpg) ![Nail Tek Strengthener Xtra 4 Strengthener and Base Coat, 0.5 oz - Image 5](https://m.media-amazon.com/images/I/71OHiosglFL.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. ## Frequently Bought Together - Nail Tek Xtra 4, Nail Strengthener for Weak and Damaged Nails, 0.5 oz, 1-Pack - Nail Tek Nail Nutritionist, Keratin Enriched Nail Treatment Oil for Weak and Damaged Nails, 0.5 oz, 1-Pack - Onyx Professional Hard as Hoof Nail Strengthening Cream with Coconut Scent, Nail Growth & Conditioning Cuticle Cream Stops Splits, Chips, Cracks & Strengthens Nails, 1 oz --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/3078931-nail-tek-strengthener-xtra-4-strengthener-and-base-coat-0](https://www.desertcart.jp/products/3078931-nail-tek-strengthener-xtra-4-strengthener-and-base-coat-0) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-22*