---
product_id: 285277124
title: "Natural FORMULA Keratin Intense Hair Serum - Keratin Infused Dry Damaged Hair Serum - Sodium Chloride Salt-Free Keratin Hair Serum - Hair Repair Treatment For Frizz Free Straightened Hair 140ml"
brand: "natural formula"
price: "194.59 DT"
currency: TND
in_stock: true
reviews_count: 5
category: "Natural Formula"
url: https://www.desertcart.tn/products/285277124-natural-formula-keratin-intense-hair-serum-keratin-infused-dry-damaged
store_origin: TN
region: Tunisia
---

# Retains straightening results 3x longer Double keratin formula for deep repair 100% sodium chloride salt-free Natural FORMULA Keratin Intense Hair Serum - Keratin Infused Dry Damaged Hair Serum - Sodium Chloride Salt-Free Keratin Hair Serum - Hair Repair Treatment For Frizz Free Straightened Hair 140ml

**Brand:** natural formula
**Price:** 194.59 DT
**Availability:** ✅ In Stock

## Summary

> ✨ Unlock salon-smooth hair that lasts—because your straightened strands deserve the best! 💁‍♀️

## Quick Answers

- **What is this?** Natural FORMULA Keratin Intense Hair Serum - Keratin Infused Dry Damaged Hair Serum - Sodium Chloride Salt-Free Keratin Hair Serum - Hair Repair Treatment For Frizz Free Straightened Hair 140ml by natural formula
- **How much does it cost?** 194.59 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/285277124-natural-formula-keratin-intense-hair-serum-keratin-infused-dry-damaged)

## Best For

- natural formula enthusiasts

## Why This Product

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

## Key Features

- • **Dual Keratin Power:** Rebuilds hair strands from within while forming a protective outer shield for lasting shine and strength.
- • **Daily Defense Ritual:** Lightweight serum designed for everyday use, enhancing elasticity and preventing breakage with every application.
- • **Gentle Yet Effective:** Sodium chloride-free to protect delicate, heat-straightened hair from further damage and dryness.
- • **Moisture-Infused Softness:** Enriched with vitamins and moisturizing agents for irresistibly smooth, touchable hair that radiates health.
- • **Extended Straightening Effect:** Pentanol-enriched formula locks in sleek, frizz-free hair up to three times longer than standard serums.

## Overview

Natural FORMULA Keratin Intense Hair Serum is a 140ml advanced hair repair treatment designed for dry, damaged, and heat-straightened hair. Featuring a dual keratin complex and pentanol, it rebuilds hair structure from within, extends straightening results up to three times longer, and is completely sodium chloride-free to prevent further damage. Infused with moisturizing ingredients and vitamins, this serum delivers immediate shine, softness, and frizz control, making it an essential daily ritual for professional-quality, resilient hair.

## Description

Natural Formula Keratin Hair Treatment Serum:This intensely restorative keratin hair repair serum is the ultimate solution for soothing, healing and repairing your hair, while adding gorgeous luster and shine. Smooth a few drops daily through your heat damaged locks for instantly strengthened strands, leaving your hair glowing and healthy. Keratin - the primary chemical component in hair - is the protein from which hairs are built. The Natural Formula keratin serum for dry hair repairs damaged hair by replacing natural keratin which has been lost, combating frizz, and replenishing strength, shine, and moisture.Retains hair-straightening results up to 3 times longer with an innovative pentanol enriched keratin formula, penetrating and rebuilding the interior of the hair and forming an external protective coating. The coating envelops and smoothens the hair along its entire length. 100% sodium-chloride-free, this keratin complex shine serum is infused with moisturizing ingredients and vitamins – providing intensive hair and scalp nourishment and treatment while delicate silicones keep hair flakes closed, preventing the effects of moisture and allowing for easy combing and styling.Features:Keratin-enriched with a double formulaRetains hair-straightening results 3 times longerSodium-chloride-free formulaInfused with moisturizing ingredients and vitaminsExceptional softness and elasticityInstructions for Use:Apply to hair, along its entire length. Suitable for daily use. For enhanced results, use the Keratin Intense Shampoo, Conditioner and Hair Mask.Click Add to Cart now to order the Natural Formula keratin infusion smoothing serum and enjoy smooth, silky results, today!

Review: It works good for me - I actually want this again
Review: Silky Smooth - I am very impressed with this product. After first using the recommended Natural Formula shampoo and conditioner, I applied this serum to my hair. I must say that the results were immediate! My hair was soft, shiny, and manageable. I straightened my hair a few hours after applying the serum and the flat iron smoothly glided through my hair. I am looking forward to how long the serum extends the straightening. The bottle says that it extends it by 3 times. Based on my first use, I highly recommend this serum.

## Features

- Two Types Of Pure Keratin Complex Serum – Expertly formulated to rebuild strands from within and forms a protective coating around straightened hair. Natural Formula’s Keratin Intense Serum repairs hair over time while also giving immediate shine results.
- Enriched With Double Formula – The Natural Formula Keratin Complex Serum acts as soon as you apply it to your hair, rebuilding and restoring the structure of the hair to renew elasticity, hair-shine and softness. This keratin repair treatment helps nourish your hair, repair past heat damage and protect against future damage.
- Retains Hair Straightening Results – Enriched with pentanol, which enhances the effects of keratin, this keratin complex repair serum retains hair-straightening results 3 times as long. Increases the hair’s durability to breakage, heat and chemical damages.
- Sodium Chloride Salt Free – Expertly formulated to meet all the needs of damaged hair, this gentle keratin treatment repair serum is perfect for hair that has undergone all types of straightening treatments which is known to cause damage to the hair shaft.
- Infused With Moisturizing Ingredients – After applying this serum, your hair is smoother, stronger and durable to breakage, it radiates a gorgeous shine and is soft and pleasant to the touch.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07JNJFFDT |
| Best Sellers Rank | #206,111 in Beauty ( See Top 100 in Beauty ) #900 in Hair Styling Serums |
| Brand Name | Natural FORMULA |
| Customer Reviews | 4.3 out of 5 stars 734 Reviews |
| Hair Type | Straight |
| Hair type | Straight |
| Item Form | Drop |
| Item Volume | 4.8 Fluid Ounces |
| Item Weight | 0.31 Pounds |
| Item form | Drop |
| Liquid Volume | 4.8 Fluid Ounces |
| Liquid volume | 4.8 Fluid Ounces |
| Manufacturer | CosmoPharm |
| Material Type Free | Silicone Free |
| Material type free | Silicone Free |
| Number of Items | 1 |
| Product Benefits | Frizz Control |
| Product benefits | Frizz Control |
| Scent | Natural |
| Scent Name | Natural |
| UPC | 854539006985 |
| Unit Count | 140.0 Milliliters |

## Product Details

- **Hair type:** Straight
- **Liquid volume:** 4.8 Fluid Ounces
- **Material type free:** Silicone Free
- **Product benefits:** Frizz Control
- **Scent:** Natural

## Images

![Natural FORMULA Keratin Intense Hair Serum - Keratin Infused Dry Damaged Hair Serum - Sodium Chloride Salt-Free Keratin Hair Serum - Hair Repair Treatment For Frizz Free Straightened Hair 140ml - Image 1](https://m.media-amazon.com/images/I/61DzsLE3xwL.jpg)

## Questions & Answers

**Q: What is the list of ingredients in their order? all we know from the page is it has keratin and is sodium chloride free. thanks**
A: Cyclopentasiloxane,dimethicone,parfum,keratin,amino acids, tocopheryl acetate, ethylexyl merhoxycinnamate,sesamum indcum (sesame) seed oil,helianthus annuus (sunflower seed oil, panthenol,yellow 11,red 17,hexyl cinnamal,alpha-isomenthol lonone,benzel salicylate,linalool,geraniol.

**Q: Can you use this Keratin on naturally curly yet fine hair? I don't want it to go straight. Thanks!**
A: I have curly hair and I use it on my hair once a week

**Q: The ends of my hair seem a little dry after my keratin treatment.  Will this product help?**
A: This product makes my hair shiny and smooth when used with blow drying.  It should help your ends.  I always use a keratin enriched conditioner after shampooing which likely contributes to making my hair smooth.  If your ends are dry after your keratin treatment, perhaps the stylist is a bit heavy handed with the flat iron.

**Q: I have natural curly/wavy hair that is gine and gets frizzy. Will this help my hair, without weighing it down.**
A: It does not say light so yes it will weigh your hair down

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works good for me
*by A***S on 21 December 2025*

I actually want this again

### ⭐⭐⭐⭐⭐ Silky Smooth
*by G***Y on 7 July 2021*

I am very impressed with this product. After first using the recommended Natural Formula shampoo and conditioner, I applied this serum to my hair. I must say that the results were immediate! My hair was soft, shiny, and manageable. I straightened my hair a few hours after applying the serum and the flat iron smoothly glided through my hair. I am looking forward to how long the serum extends the straightening. The bottle says that it extends it by 3 times. Based on my first use, I highly recommend this serum.

### ⭐⭐⭐⭐⭐ Absolutely love the results
*by L***Y on 25 November 2023*

I pay for high end salon keratin treatments twice a year. It has made all the difference in my blonde/natural graying fine textured longer hair. I wanted something to refresh the softness and results. These capsules are so easy to use in the shower and yield great results in softness, reduced dry time, etc. I saw they became unavailable. I'm waiting...hoping they come back.

## Frequently Bought Together

- Natural FORMULA Keratin Intense Hair Serum - 4.8 fl.oz - Sodium Chloride Salt-Free Keratin Hair Serum - Hair Repair Treatment For Frizz Free Straightened Hair
- Natural Formula Keratin Hair Mask - Intense Repair, Hair Mask for Frizzy Hair - 350ml
- Natural FORMULA Ampoule Intense Hair Shampoo - Professional Ampoule Treatment with Natural Oils - Repair, Restore and Nourish Damaged, Dry, and Color-Treated Hair - Paraben and SLS Free - 13.5 Fl Oz

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-10-12*