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- – 4-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
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Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
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30-day returns
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FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Friday, Nov 6
At a glance
- Condition
- New
- Size
- 12 Fl Oz (Pack of 1)
- Model
- BSST12
- Dimensions
- 3 x 1.75 x 9.5 in
- Weight
- 0.52 g
- Language
- English
- Batteries
- 1 A batteries required.
Features 5
- WEIGHTLESS LEAVEIN 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 healthierlooking hair.
- ALLHAIR-TYPES FORMULA: Gentle, crueltyfree, sulfate and parabenfree treatment suitable for straight, wavy, curly, fine or textured hair.
- MULTIPURPOSE 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.
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.
Specs 30
| Language | English |
|---|---|
| Product Dimensions | 3 x 1.75 x 9.5 inches; 0.02 ounces |
| Item model number | BSST12 |
| Batteries | 1 A batteries required. |
| Manufacturer | BioSilk |
| Item Form | Lotion |
| Hair Type | All |
| Product Benefits | Shining, Smoothening, Split Ends Repair |
| Scent Name | Amber |
| Additional Features | Not Tested On Animals |
| Hair Conditioner Type | Leave-In Hair Conditioner |
| Brand Name | BioSilk |
| Age Range Description | Adult,Teen |
| Item Highlight | Reconstructs & Adds Shine, Smooths & Prevents Split Ends, Sulfate-Free, Paraben-Free, Cruelty-Free |
| UPC | 633911744956 |
| Global Trade Identification Number | 56 |
| Item Type Name | Leave-In Treatment |
| Model Number | BSST12 |
| Manufacturer Part Number | BSST12 |
| Unit Count | 12 Fluid Ounces |
| Number of Items | 1 |
| Item Dimensions | 3 x 1.75 x 9.5 inches |
| Liquid Volume | 12 fluid ounces |
| Item Weight | 0.52 g |
| Size | 12 Fl Oz (Pack of 1) |
| Material Features | B002JLUY2M |
| Material Type Free | Paraben Free |
| Active Ingredients | vitamin e,amino acids |
| Special Ingredients | Vitamin E |
| Recommended Uses For Product | All Hair Types |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, Nov 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
⭐⭐⭐⭐⭐ Soft, Shiny, and Frizz-Free Hair
BioSilk Silk Therapy is one of the best leave-in treatments I have ever used. It leaves my hair incredibly soft, silky, and shiny after just one application. It helps control frizz, makes detangling easier, and does not leave a greasy feeling when used in the right amount. The fragrance is also pleasant and long-lasting. I love that it can be used on both hair and skin. This is a high-quality product that makes my hair look healthier and well cared for. I will definitely purchase it again.
...
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Reviewed in the United States on June 15, 2026 by Lilianis
This product is amazing! The ingredients won't cause harm to your hair!
BioSilk Silk Therapy has quickly become one of my favorite leave-in treatments! After just one use, my hair feels noticeably softer, smoother, and has a beautiful shine. It helps tame frizz, makes brushing and detangling much easier, and leaves my hair feeling moisturized without a heavy or greasy residue when used sparingly. I also really enjoy the light, pleasant fragrance, which lasts throughout the day. Another great feature is that it can be used on both hair and skin, making it a versatile product. Overall, I’m very happy with the results. My hair looks healthier, feels silky, and has a gorgeous shine. This is definitely a product I would purchase again!
...
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Reviewed in the United States on August 15, 2026 by Teaha Adcock
Best for bleached hair
Amazing as always. Perfect for bleached hair. It brings back a soft feel and takes away the look of dry texture without leaving greasy looking residue. I still have not found a comparable product to treat my bleached black hair. It keeps it from breaking and allows me to brush it without tons of breakage. It has a subtle scent that refreshes in between washes and keeps my hair from tangling too much.
...
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Reviewed in the United States on July 18, 2026 by Manda
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.
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Reviewed in the United States on April 6, 2026 by Melissa Jacomino
Dime size is all you need for AMAZING, SMOOTH, SPLIT ENDS CLOSED results!
This stuff is absolutely amazing! My hairdresser had used it in me in my 20's and not until recently had I used it again. A friend had purchased this for me for my birthday and I can't believe what a dramatic change it does to my fine, limp hair. Just a dime size will do (wait til your hair is damp but not wet for best results otherwise you end up with the greasy look). It might seem a bit pricey, but a little goes a long way. It will give you shine like no tomorrow plus close any split ends that you may have. I'm absolutely in love with this product and am so happy to be reunited with it once again. Highly recommend to everyone regardless of texture or hair follicles. It really IS miracle cure and an instant styler for all.
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Reviewed in the United States on June 4, 2026 by Loyal Customer
Silly soft and the best skin product EVER!
This is the absolute BEST product! It leaves my skin so silky smooth and soft. It’s great for the hair as well but I just can’t believe how wonderful it is for my skin. Even my husband noticed the difference. Love it and will continue to use this product. It has a little floral fragrance. It initially feels greasy but quickly turn to a satin silky feeling.
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Reviewed in the United States on July 4, 2026 by Heather
I like it
Amazing! Love how it leaves my hair nice and smooth and smells nice and clean. Don’t like how it kind of clumps up around the lid.
Reviewed in the United States on August 13, 2026 by A
Bio silk is a product that is amazing for anybody’s hair. It’s wonderful and it’s not greasy.
Ordered the 12 ounces and it was a big bottle. I love bio silk. It is most amazing for dry hair. I call it my bio silk soak I load up my hand with a bunch of bio silk rub it really good into the end of my hair. It almost looks greasy, but it’s not like the next morning. It absorbs in your hair just feels so soft and wonderful not greasy at all. I highly recommend bio silk. Not a fan of the spray on hydrating conditioner, though… Go figure
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Reviewed in the United States on August 13, 2026 by G