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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 40,327 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Jun 1
Order within 7 hours and 52 minutes
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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: #3,423 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #18 in Hair Treatment Masks


#18 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: Monday, Jun 1

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
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • 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

    • 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
    • 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.
Reviewed in the United States on March 31, 2026 by Amazon Customer
    • 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
    • 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
    • Excellent product
It leaves the hair very soft and gives it shine.
Reviewed in the United States on May 20, 2026 by Liz
    • 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
    • Good product
Does a good job taming frizz. Smells great too.
Reviewed in the United States on April 22, 2026 by Mary B.
    • Leaves my hair very soft and shiny
I originally found this product at a hair supply store giving samples. I put at the most 2 drops, usually less, I rub it around my hands then into my hair. My hair is shiny, not greasy ad long as you don’t use too much, and very soft. Love the fragrance. It lasts a long time.
Reviewed in the United States on May 11, 2026 by Happy

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