---
product_id: 286355556
title: "Silk Therapy Serum by for Unisex - 34 oz Serum, I24115"
brand: "biosilk"
price: "¥22847"
currency: JPY
in_stock: true
reviews_count: 8
category: "Biosilk"
url: https://www.desertcart.jp/products/286355556-silk-therapy-serum-by-for-unisex-34-oz-serum-i24115
store_origin: JP
region: Japan
---

# 34 oz nourishing serum Reconstructs & protects hair cuticles Proudly made in USA Silk Therapy Serum by for Unisex - 34 oz Serum, I24115

**Brand:** biosilk
**Price:** ¥22847
**Availability:** ✅ In Stock

## Summary

> ✨ Unlock the secret to irresistibly smooth hair — one drop is all it takes! 💧

## Quick Answers

- **What is this?** Silk Therapy Serum by for Unisex - 34 oz Serum, I24115 by biosilk
- **How much does it cost?** ¥22847 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/286355556-silk-therapy-serum-by-for-unisex-34-oz-serum-i24115)

## 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

- • **Universal Hair Harmony:** Perfect for all hair types, unisex appeal included
- • **Cruelty-Free Confidence:** Ethically crafted with zero animal testing
- • **Silk-Infused Hair Revival:** Fills cuticle voids for ultra-smooth, silky strands
- • **Iconic American Craftsmanship:** Trusted quality made in the USA since 2015
- • **All-Day Lightweight Protection:** Leave-in formula that repairs without weighing hair down

## Overview

BioSilk Silk Therapy Serum is a 34 oz leave-in treatment designed to repair, smooth, and protect all hair types by filling cuticle voids with silk proteins. Cruelty-free and made in the USA, this lightweight serum delivers salon-quality shine and softness, making it a top choice for professionals seeking flawless hair.

## Description

B00KWT8HCC

Review: Does wonders to the hair - Just one drop is enough otherwise it will make your hair too greasy It is so nice, make your hair soft and silk look-alike. Smells wonderful Great product
Review: I didn’t see changed - It made my hair oily and greasy, I don’t recommend

## Features

- Fills voids in cuticle to create smooth hair
- Leave-in silk replenishing and reconstructing treatment to repair, smooth and protect all hair types
- Not tested on animals
- Made in USA

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KWT8HCC |
| ASIN  | B00KWT8HCC |
| Best Sellers Rank | #27,065 in Beauty ( See Top 100 in Beauty ) #177 in Hair Styling Serums |
| Customer reviews | 4.7 4.7 out of 5 stars (10,363) |
| Date First Available  | 13 January 2015 |
| Is Discontinued By Manufacturer  | No |
| Item model number | I24115 |
| Item model number  | I24115 |
| Manufacturer | Biosilk |
| Manufacturer  | Biosilk |
| Product Dimensions | 7.62 x 8.89 x 27.94 cm; 889 g |
| Product Dimensions  | 7.62 x 8.89 x 27.94 cm; 889 g |

## Product Details

- **Brand:** Biosilk
- **Hair type:** All
- **Item form:** Serum
- **Material features:** Natural
- **Product benefits:** Replenisces, strengthens and protects hair with silk therapy

## Images

![Silk Therapy Serum by for Unisex - 34 oz Serum, I24115 - Image 1](https://m.media-amazon.com/images/I/51BMnffzpZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does wonders to the hair
*by F***T on 12 May 2022*

Just one drop is enough otherwise it will make your hair too greasy It is so nice, make your hair soft and silk look-alike. Smells wonderful Great product

### ⭐ I didn’t see changed
*by G***M on 30 April 2024*

It made my hair oily and greasy, I don’t recommend

### ⭐⭐⭐⭐⭐ Great for raw hair extensions
*by I***N on 16 August 2024*

Very shiny buy not oily

## 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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**Shop now:** [https://www.desertcart.jp/products/286355556-silk-therapy-serum-by-for-unisex-34-oz-serum-i24115](https://www.desertcart.jp/products/286355556-silk-therapy-serum-by-for-unisex-34-oz-serum-i24115)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-31*