---
product_id: 145823493
title: "Si-Nails Strengthening & Hardening Nail Serum Treatment, 0.08 fl oz | Cationic Hyaluronic Acid, Fast Absorbing, Hydrates Nails & Cuticles, Nail Growth & Strength, Dermatologist Recommended"
brand: "isdin"
price: "$82.05"
currency: USD
in_stock: true
category: "Isdin"
url: https://www.desertcart.us/products/145823493-si-nails-strengthening-and-hardening-nail-serum-treatment-0-08
store_origin: US
region: United States of America
---

# Fast-absorbing serum for quick results Cationic Hyaluronic Acid for deep cuticle hydration Increases nail strength by reinforcing keratin Si-Nails Strengthening & Hardening Nail Serum Treatment, 0.08 fl oz | Cationic Hyaluronic Acid, Fast Absorbing, Hydrates Nails & Cuticles, Nail Growth & Strength, Dermatologist Recommended

**Brand:** isdin
**Price:** $82.05
**Availability:** ✅ In Stock

## Summary

> 💅 Elevate your nail game—stronger, smoother, faster!

## Quick Answers

- **What is this?** Si-Nails Strengthening & Hardening Nail Serum Treatment, 0.08 fl oz | Cationic Hyaluronic Acid, Fast Absorbing, Hydrates Nails & Cuticles, Nail Growth & Strength, Dermatologist Recommended by isdin
- **How much does it cost?** $82.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/145823493-si-nails-strengthening-and-hardening-nail-serum-treatment-0-08)

## Best For

- isdin enthusiasts

## Why This Product

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

## Key Features

- • **Hydrate & Heal:** Advanced cationic hyaluronic acid locks in moisture for healthier cuticles
- • **Rapid Absorption Formula:** Lightweight gel penetrates quickly—no sticky wait times
- • **Clinically Tested & Trusted:** Proven to reduce brittleness and roughness, developed in Spain
- • **Keratin-Enhancing Natural Gum:** Pistacia lentiscus gum promotes essential keratin for durable nails
- • **Power-Packed Nail Fortification:** Silicon-boosting Silanediol salicylate strengthens nails from within

## Overview

ISDIN Si-Nails is a fast-absorbing nail serum designed to strengthen and harden thin, brittle nails. Featuring Silanediol salicylate to boost silicon levels and pistacia lentiscus gum to promote keratin, it enhances nail durability while cationic hyaluronic acid deeply moisturizes cuticles. Developed in Spain and clinically tested, this gel formula delivers quick, visible improvements in nail health.

## Description

desertcart.com: ISDIN Si-Nails - Fast Absorbing Nail Strengthening and Hardening Serum for Nail Durability in Thin Nails, made with Cationic Hyaluronic Acid 0.08 FL OZ : Beauty & Personal Care

## Features

- YOUR SOLUTION FOR: brittle or weak nails
- TESTED: Increases nail strength and durability while helping to repair brittle nails and reduce roughness
- TECHNOLOGY: Silanediol salicylate promotes silicon, one of the predominant minerals in the nail, while pistacia lentiscus gum promotes keratin, an essential component to strong and healthy nails. Cationic hyaluronic acid, an enhanced version of one of the most well known moisturizers in the world, which promotes cuticle moisturization.
- DEVELOPED IN: Spain

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07T6J98TT |
| Best Sellers Rank | #18,947 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #38 in Nail Strengtheners |
| Brand | ISDIN |
| Brand Name | ISDIN |
| Customer Reviews | 4.0 out of 5 stars 2,446 Reviews |
| Item Form | Gel |
| Item Weight | 0.02 Kilograms |
| Liquid Volume | 2.5 Milliliters |
| Manufacturer | ISDIN |
| Manufacturer Part Number | 690017415 |
| Number of Items | 1 |
| Size | 1 Count (Pack of 1) |
| Specialty | Strengthener |
| Unit Count | 1 Count |

## Product Details

- **Brand:** ISDIN
- **Item Form:** Gel
- **Item Weight:** 0.02 Kilograms
- **Liquid Volume:** 2.5 Milliliters
- **Specialty:** Strengthener

## Images

![Si-Nails Strengthening & Hardening Nail Serum Treatment, 0.08 fl oz | Cationic Hyaluronic Acid, Fast Absorbing, Hydrates Nails & Cuticles, Nail Growth & Strength, Dermatologist Recommended - Image 1](https://m.media-amazon.com/images/I/61Upc4sH6BL.jpg)

## Questions & Answers

**Q: Can I use Si-Nails on top of nail polish or gel?**
A: Si-Nails is not designed for use on top of a polish or a gel. It should always be applied directly to bare nails that are clean and dry.

**Q: How long do I need to use Si-Nails for?**
A: Results can be seen in as little as 14 days. However, it depends on the condition of your nails before starting Si-Nails nail strengthening treatment. The condition of your nails will improve with extended use.

**Q: The first time I used Si-Nails, I didn’t see any product come out. How do I start using it correctly?**
A: Before using Si-Nails for the first time, activate the click pen by pressing down on the click button at least 25 times, until the applicator is moistened. This will activate the flow and you will be able to start using Si-Nails.

## Frequently Bought Together

- ISDIN Si-Nails - Fast Absorbing Nail Strengthening and Hardening Serum for Nail Durability in Thin Nails, made with Cationic Hyaluronic Acid 0.08 FL OZ
- Onyx Professional Hard as Hoof Nail Strengthening Cream with Coconut Scent, Nail Growth & Conditioning Cuticle Cream Stops Splits, Chips, Cracks & Strengthens Nails, 1 oz
- OPI Repair Mode Bond Building Nail Serum | Keratin Protein Nail Strengthening Treatment | For Stronger Nails & Nail Growth

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**Shop now:** [https://www.desertcart.us/products/145823493-si-nails-strengthening-and-hardening-nail-serum-treatment-0-08](https://www.desertcart.us/products/145823493-si-nails-strengthening-and-hardening-nail-serum-treatment-0-08)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-13*