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BioSilk

BioSilk Silk Therapy Original, Reconstructing Leave-In Hair Treatment, Adds Shine, Smooths & Prevents Split Ends, Sulfate-Free, Paraben-Free, Cruelty-Free, 12 Oz

  • Based on 25,838 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Jul 19
Order within 5 hours and 1 minute
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Size: 12 Fl Oz (Pack of 1)


Features

  • 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.

Is Discontinued By Manufacturer ‏ : ‎ No


Language ‏ : ‎ English


Product Dimensions ‏ : ‎ 3 x 1.75 x 9.5 inches; 0.02 ounces


Item model number ‏ : ‎ BSST12


Batteries ‏ : ‎ 1 A batteries required.


UPC ‏ : ‎


Manufacturer ‏ : ‎ BioSilk


Best Sellers Rank: #2,829 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #16 in Hair Treatment Masks


#16 in Hair Treatment Masks:


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


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 Grams


Size: 12 Fl Oz (Pack of 1)


Brand Name: BioSilk


Age Range Description: Adult,Teen


Manufacturer: BioSilk


UPC: 633911744956


Global Trade Identification Number: 56


Model Number: BSST12


Manufacturer Part Number: BSST12


Item Type Name: Leave-In Treatment


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


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jul 19

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.

  • Klarna Financing
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  • Affirm Financing
  • Afterpay Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • 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. ... show more
Reviewed in the United States on June 4, 2026 by Loyal Customer
    • Silky & smooth hair in humid weather.
I have extremely long hair. This is the only product (and I’ve tried dozens) that keeps my hair silky and smooth without being greasy. Works fantastic in humid weather. A little goes a long way. Use in damp hair. Not wet or dry.
Reviewed in the United States on April 28, 2026 by #honest
    • Thick texture but no heaviness, just shine Thick texture but no heaviness, just shine
Review Image by Melissa Jacomino
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. ... show more
Reviewed in the United States on April 6, 2026 Reviewed in the United States on April 6, 2026 by Melissa Jacomino
    • 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
Reviewed in the United States on April 17, 2026 by Cheryl Femrite
    • A Classic for a Reason
This stuff is a classic. I’ve been using it for years, and it always makes my hair feel smoother, softer, and healthier. A little goes a long way, and it never disappoints. Definitely a go-to.
Reviewed in the United States on April 24, 2026 by Stephanie Taff
    • 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! ... show more
Reviewed in the United States on March 15, 2026 by Yesica
    • 12oz Silk Therapy
Truly superb product for a light, fragrant, yet protective serum for most all hair types. Highly recommended
Reviewed in the United States on April 28, 2026 by Katrina Simbre
    • Excellent product
It leaves the hair very soft and gives it shine.
Reviewed in the United States on May 20, 2026 by Liz

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