--- product_id: 16487131 title: "Silk Therapy Original, Leave-In Hair Treatment, 12 Oz" brand: "biosilk" price: "¥8465" currency: JPY in_stock: true category: "Bio Silk" url: https://www.desertcart.jp/products/16487131-silk-therapy-original-leave-in-hair-treatment-12-oz store_origin: JP region: Japan --- # Sulfate & paraben-free, cruelty-free Weightless leave-in formula Repairs & strengthens hair Silk Therapy Original, Leave-In Hair Treatment, 12 Oz **Brand:** biosilk **Price:** ¥8465 **Availability:** ✅ In Stock ## Summary > ✨ Unlock the secret to effortlessly flawless hair every day! ## Quick Answers - **What is this?** Silk Therapy Original, Leave-In Hair Treatment, 12 Oz by biosilk - **How much does it cost?** ¥8465 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/16487131-silk-therapy-original-leave-in-hair-treatment-12-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 - • **Dual-Mode Magic:** Use on wet or dry hair for instant detangling, conditioning, and heat protection. - • **Ethical Elegance:** Cruelty-free and free from harsh chemicals—beauty with a conscience. - • **Frizz-Free, Shine-On:** Say goodbye to split ends and hello to enviable, glossy strands. - • **Universal Hair Harmony:** Perfectly crafted for every hair type—because your hair deserves tailored luxury. - • **Silk-Infused Weightless Care:** Experience deep repair without heaviness—your hair’s new best friend. ## Overview BioSilk Silk Therapy Original is a 12 oz weightless leave-in hair treatment enriched with silk proteins, vitamin E, and amino acids. Designed for all hair types, it repairs damage, smooths strands, prevents split ends, reduces frizz, and adds brilliant shine—all while being sulfate-, paraben-, and cruelty-free. Trusted by over 26,000 users with a 4.8-star rating, this iconic formula offers versatile use on wet or dry hair for conditioning, detangling, and heat protection. ## Description Ideal for all hair types.Fills voids in cuticle to create smooth hair.Leave in replenishing & reconstructing treatment.Aids in preventing split ends, provides incredible shine. ## 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 | B002JLUY2M | | Active Ingredients | vitamin e,amino acids | | Additional Features | Not Tested On Animals | | Age Range (Description) | Adult,Teen | | Age Range Description | Adult,Teen | | Best Sellers Rank | #1,957 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #30 in Hair Conditioner | | Brand | BioSilk | | Brand Name | BioSilk | | Customer Reviews | 4.8 out of 5 stars 26,097 Reviews | | Global Trade Identification Number | 00001910596751, 00633911401040, 00633911651230, 00633911744956, 00885262417069 | | Hair Conditioner Type | Leave-In Hair Conditioner | | Hair Type | All | | Item Dimensions | 3 x 1.75 x 9.5 inches | | Item Form | Liquid | | Item Highlight | Reconstructs & Adds Shine, Smooths & Prevents Split Ends, Sulfate-Free, Paraben-Free, Cruelty-Free | | Item Type Name | Leave-In Treatment | | Item Weight | 0.52 g | | Liquid Volume | 12 fluid ounces | | Manufacturer | Fab Products | | Manufacturer Part Number | BSST12 | | Material Feature | B002JLUY2M | | Material Features | B002JLUY2M | | Material Type Free | Paraben Free | | Model Number | BSST12 | | Number of Items | 1 | | Package Type Name | Bottle | | Product Benefits | Shining, Smoothening, Split Ends Repair | | Recommended Uses For Product | All Hair Types | | Scent Name | Amber | | Size | 12 Fl Oz (Pack of 1) | | Special Ingredients | Vitamin E | | UPC | 001910596751 884859531058 885777504360 885262417069 633911401040 633911744956 070071254060 | | Unit Count | 12 Fluid Ounces | ## Product Details - **Brand:** BioSilk - **Hair Type:** All - **Item Form:** Liquid - **Material Feature:** B002JLUY2M - **Product Benefits:** Shining, Smoothening, Split Ends Repair ## Images ![Silk Therapy Original, Leave-In Hair Treatment, 12 Oz - Image 1](https://m.media-amazon.com/images/I/41Jchn-fPYL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Is this product 100% authentic?** A: After seeing this question, a further investigation was made and a comparison with the one from a local beauty shop definitely indicates that it is thinned out and not the “real thing”, not 100% authentic, in my opinion. **Q: Why is this 17.99 and same item is $34?** A: >> Why is this 17.99 and same item is $34? The wholesale price we get from the manufacturer is DEFINITELY MUCH higher than $17.99. Take a chance when you buy such items. Counterfeits are everywhere in eBay and Amazon. **Q: CN I use this on dry hair?** A: I use it only on dry hair. I have curly hair and apply it every morning and as needed throughout the day if I’m out in humid weather. It keeps it from getting frizzy and stays smooth most of the day. Just don’t put it close to your roots or it will look greasy. **Q: Why are A batteries required???** A: It doesn’t. There must have been a typo in the listing. ## Frequently Bought Together - BioSilk Silk Therapy Original Cure, Reconstructing Treatment For Adding Shine & Helping Prevent Split Ends, Sulfate, Paraben, & Cruelty-Free, 12 Oz - CHI 44 Iron Guard Thermal Protection Spray, Nourishing Formula Helps Resist Heat Damage to Hair & Tame Frizz, Clear, 8 Oz - BioSilk Hydrating Therapy Pure Moisture Leave-In Spray, Replenishes Hair Moisture & Protects From Frizz, Sulfate, Paraben, & Cruelty-Free, 7 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/16487131-silk-therapy-original-leave-in-hair-treatment-12-oz](https://www.desertcart.jp/products/16487131-silk-therapy-original-leave-in-hair-treatment-12-oz) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-26*