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✨ Unlock your hair’s silk secret and shine like never before!
BioSilk Silk Therapy Original is a 12 oz leave-in hair treatment enriched with silk proteins, vitamin E, and amino acids. Designed for all hair types, it smooths, adds brilliant shine, and prevents split ends without weighing hair down. This sulfate-free, paraben-free, and cruelty-free formula has been a trusted beauty staple since 1986, boasting over 25,000 five-star reviews and a loyal global following.








| ASIN | B002JLUY2M |
| ASIN | B002JLUY2M |
| Active Ingredients | vitamin e,amino acids |
| Additional Features | Not Tested On Animals |
| Age Range Description | Adult,Teen |
| Batteries | 1 A batteries required. |
| Best Sellers Rank | #2,637 in Beauty & Personal Care ( See Top 100 in Beauty & Personal Care ) #14 in Hair Treatment Masks |
| Brand Name | BioSilk |
| Customer Reviews | 4.8 4.8 out of 5 stars (25,539) |
| Global Trade Identification Number | 00633911744956 |
| Hair Conditioner Type | Leave-In Hair Conditioner |
| Hair Type | All |
| Is Discontinued By Manufacturer | No |
| Item Dimensions | 3 x 1.75 x 9.5 inches |
| Item Form | Lotion |
| Item Type Name | Leave-In Treatment |
| Item Weight | 0.52 Grams |
| Item model number | BSST12 |
| Language | English |
| Liquid Volume | 12 Fluid Ounces |
| Manufacturer | BioSilk |
| Manufacturer | BioSilk |
| Manufacturer Part Number | BSST12 |
| Material Features | B002JLUY2M |
| Material Type Free | Paraben Free |
| Model Number | BSST12 |
| Number of Items | 1 |
| Product Benefits | Shining, Smoothening, Split Ends Repair |
| Product Dimensions | 3 x 1.75 x 9.5 inches; 0.02 ounces |
| Recommended Uses For Product | All Hair Types |
| Scent Name | Amber |
| Size | 12 Fl Oz (Pack of 1) |
| Special Ingredients | Vitamin E |
| UPC | 633911744956 |
| UPC | 633911744956 |
| Unit Count | 355 Milliliters |
M**R
This product is a classic for a reason
✨ Instantly makes my hair feel softer, smoother, and noticeably shinier without weighing it down. A little goes a long way, helps tame frizz, and leaves my hair looking healthy and polished. I’ve been using it for years and always come back to it. Highly recommend!
A**R
The best
I’ve been using this product for decades. Hands down, it’s my favorite hair product. It’s gentle on the hair, has no scent, and gets the job done. For the price, it is a generous amount and it lasts for a while. I tired other stuff but always come back to this.
C**E
Smells amazing! Great for hair and skin!
Have been using this since the 90's. Works great on mixed and Caucasian hair and skin. Love this on my skin before my Vaseline Coco butter lotion
S**S
This is the single best hair product that I have used - it's really that good!
Phenomenal product, easy usage, does not stain or stink, this will take out any hair tangle or snag in long hair, I have used this product for more than two decades and will continue to use it. This is the single best hair product that I have used - it's really that good!
M**O
Thick texture but no heaviness, just shine
I was really surprised by the size of the bottle — you get a lot of product, and since you only need a small amount, I can tell this will last a long time. The smell is something I love, it smells really good and fresh. The texture is pretty thick, like a heavier oil, but once you apply it, your hair doesn’t feel heavy at all. That honestly surprised me. My hair tends to look dull, especially at the ends, and this made a big difference. I love how it brings shine back to my hair, helps with frizz, and even makes my split ends look less noticeable. The shine it gives is honestly impressive without making my hair look greasy. Overall, I love how my hair looks and feels after using this — softer, shinier, and more manageable.
Y**A
Love love love!!
My mom used to use this on my hair as a child and the smell always stuck with me. As an adult i wanted to purchase it but it was a little steep for my pockets all to say i ended up buying it years later and i still love it! Now i use it on my kids they love the smell as well and it leaves their hair shiny, smells amazing, and moisturizes it! I definitely think the quality justifies the price if you have a little extra laying around! My daughters hairs are very coarse and dry as well as mine and well everything absorbs quickly but this just holds that moisture so well!
M**.
Good product
Does a good job taming frizz. Smells great too.
A**S
Hair soft and no frizz
It’s been a very long time since I have put oil in my hair before going to bed. This BioSilk is awesome, my hair was so soft in the morning and had less frizz after fixing my hair will for sure buy it again.
S**A
The best serum for all hair type, does not leave your hair oily, I've tried several other hair oils and I always go back to Biosilk, it's worth every Pound!
I**A
J’utilise ce Biosilk sérum depuis des années et je le rachète encore et encore. Il galbe bien les cheveux qui pour ma part sont texturés, leur apporte brillance et douceur, et je trouve qu’il fait exactement ce que j’attends. Pour moi, c’est un produit fiable qui ne déçoit jamais, idéal pour nourrir et embellir les cheveux au quotidien.
E**S
Muy bueno, lo unico es que antes venía lleno y ahora le quitan mucho producto 🥴
R**R
Great product 👌
F**I
Maravilhoso
Trustpilot
3 weeks ago
2 weeks ago