---
product_id: 18569517
title: "BioSilk Silk Therapy Original, Leave-In Hair Treatment, 34 Oz"
brand: "biosilk"
price: "$200.75"
currency: USD
in_stock: true
reviews_count: 13
category: "Bio Silk"
url: https://www.desertcart.us/products/18569517-biosilk-silk-therapy-original-leave-in-hair-treatment-34-oz
store_origin: US
region: United States of America
---

# Sulfate-, paraben-, cruelty-free 1005 ml weightless hydration Repairs & protects hair strands BioSilk Silk Therapy Original, Leave-In Hair Treatment, 34 Oz

**Brand:** biosilk
**Price:** $200.75
**Availability:** ✅ In Stock

## Summary

> ✨ Elevate your hair game with weightless silk therapy! 💧

## Quick Answers

- **What is this?** BioSilk Silk Therapy Original, Leave-In Hair Treatment, 34 Oz by biosilk
- **How much does it cost?** $200.75 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/18569517-biosilk-silk-therapy-original-leave-in-hair-treatment-34-oz)

## Best For

- biosilk enthusiasts

## Why This Product

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

## Key Features

- • **Ethical Elegance:** Cruelty-free, sulfate- and paraben-free care that aligns with your conscious lifestyle.
- • **Multi-Tasking Magic:** Use on wet or dry hair to detangle, condition, add shine, and shield from heat & environment.
- • **Silk-Powered Repair:** Infuses silk proteins to rebuild and smooth damaged hair without heaviness.
- • **Frizz-Free Confidence:** Tames frizz and split ends for a polished, professional look all day long.
- • **Universal Hair Harmony:** Gentle formula perfect for every hair type—straight, curly, fine, or textured.

## Overview

BioSilk Silk Therapy Original is a 34 oz leave-in hair treatment enriched with silk proteins and vitamin E that repairs, smooths, and protects all hair types. This lightweight, cruelty-free formula reduces frizz, prevents split ends, and adds lasting shine without weighing hair down—perfect for the modern professional seeking effortless, healthy hair.

## Description

BioSilk Silk Therapy Original is a weightless leave-in silk replenishing and reconstructing treatment that helps repair, smooth and protect all hair types.

Review: Shine, protection and best aroma - I’ve been using BioSilk Silk Therapy Original for years, and it’s still one of my go-to hair products. It leaves my hair feeling soft, smooth, and noticeably healthier without weighing it down. A little goes a long way, and it helps control frizz while adding a nice shine. It’s one of those products I always come back to because it just works.
Review: BioSilk - BioSilk it's an amazing product. I especially like this one I put just a piece size drop in my hand after I wash my hair and I run it through there and my hair smells great and it feels really good. I would recommend giving this a try. You will not be disappointed.

## Features

- WEIGHTLESS LEAVE‑IN TREATMENT: Silk Therapy Original infuses hair with silk proteins to repair, smooth, and protect strands without heaviness.
- REPAIRS & STRENGTHENS: Helps rebuild damaged hair, prevent split ends, reduce frizz and improve shine for healthier‑looking hair.
- ALL‑HAIR TYPES FORMULA: Gentle, cruelty‑free, sulfate‑ and paraben‑free treatment suitable for straight, wavy, curly, fine or textured hair.
- MULTI‑PURPOSE CARE: Use on wet or dry hair to detangle, condition, add shine, and help protect from heat and environmental stress.
- BIOSILK: The quest for healthier hair is how BioSilk Silk Therapy emerged in 1986. The creation of the BioSilk Silk Therapy Original treatment has led to the development of a full range of BioSilk hair products.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KWT8HCC |
| Active Ingredients | vitamin e |
| Additional Features | Not Tested On Animals |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #4,567 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #23 in Hair Treatment Masks |
| Brand | BioSilk |
| Brand Name | BioSilk |
| Customer Reviews | 4.7 out of 5 stars 16,594 Reviews |
| Global Trade Identification Number | 00633911744970 |
| Hair Conditioner Type | Leave-In Hair Conditioner |
| Hair Type | All |
| Item Dimensions | 3 x 3.5 x 11 inches |
| Item Form | Drop |
| Item Highlight | Reconstructs & Adds Shine, Smooths & Prevents Split Ends, Sulfate-Free, Paraben-Free, Cruelty-Free |
| Liquid Volume | 1005 ml |
| Manufacturer | Biosilk |
| Manufacturer Part Number | I24115 |
| Material Feature | Natural |
| Material Features | Natural |
| Material Type Free | Paraben Free |
| Model Number | I24115 |
| Number of Items | 1 |
| Package Type Name | Bottle |
| Product Benefits | Rejuvenating |
| Recommended Uses For Product | All |
| Scent Name | Unscented |
| Size | 34 Fl Oz (Pack of 1) |
| Special Ingredients | Vitamin E |
| UPC | 633911744970 |
| Unit Count | 34 Fluid Ounces |

## Product Details

- **Brand:** BioSilk
- **Hair Type:** All
- **Item Form:** Drop
- **Material Feature:** Natural
- **Product Benefits:** Rejuvenating

## Images

![BioSilk Silk Therapy Original, Leave-In Hair Treatment, 34 Oz - Image 1](https://m.media-amazon.com/images/I/51BMnffzpZL.jpg)
![BioSilk Silk Therapy Original, Leave-In Hair Treatment, 34 Oz - Image 2](https://m.media-amazon.com/images/I/61F9FF4fadL.jpg)
![BioSilk Silk Therapy Original, Leave-In Hair Treatment, 34 Oz - Image 3](https://m.media-amazon.com/images/I/71koHGd7zML.jpg)
![BioSilk Silk Therapy Original, Leave-In Hair Treatment, 34 Oz - Image 4](https://m.media-amazon.com/images/I/61MiM3weV6L.jpg)
![BioSilk Silk Therapy Original, Leave-In Hair Treatment, 34 Oz - Image 5](https://m.media-amazon.com/images/I/71zYKjpd0yL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Shine, protection and best aroma
*by J***A on April 21, 2026*

I’ve been using BioSilk Silk Therapy Original for years, and it’s still one of my go-to hair products. It leaves my hair feeling soft, smooth, and noticeably healthier without weighing it down. A little goes a long way, and it helps control frizz while adding a nice shine. It’s one of those products I always come back to because it just works.

### ⭐⭐⭐⭐⭐ BioSilk
*by S***I on September 1, 2026*

BioSilk it's an amazing product. I especially like this one I put just a piece size drop in my hand after I wash my hair and I run it through there and my hair smells great and it feels really good. I would recommend giving this a try. You will not be disappointed.

### ⭐⭐⭐⭐⭐ This should be my 4th bottle now!
*by A***A on August 13, 2025*

I’ve been using BioSilk Silk Therapy for a few years now, and I’m honestly blown away. My hair has always been on the dry and frizzy side, but just a few drops of this serum after washing make it feel silky smooth and look like I just stepped out of a salon. The shine is unreal, and it never feels greasy or weighed down. I also love that it works on both damp and dry hair, so I can use it for a quick touch-up before heading out. The scent is light and pleasant, and a little goes a long way, so the bottle will last a long time. This has become my go-to product for keeping my hair healthy, soft, and frizz-free. Highly recommend to anyone who wants that sleek, polished look without spending hours on styling!

## Frequently Bought Together

- BioSilk Silk Therapy Original, Reconstructing Treatment For Adding Shine & Helping Prevent Split Ends, Sulfate, Paraben, & Cruelty-Free, 34 Oz
- BioSilk Silk Therapy Duo Set Shampoo & Conditioner, Gentle Cleansing Haircare For Amazing Shine, Sulfate, Paraben, & Cruelty-Free, 12 Oz (Pack of 2)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-09-16*