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BioSilk Silk Therapy Original, Leave-In Hair Treatment, 5.64 Oz

  • Based on 16,596 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Sep 16
Order within 16 hours and 1 minute
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Size: 5.6 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

BioSilk is the original silk infused line of hair care products using natural pure silk in every product. Silk contains 17 of the 19 amino acids in hair and is the strongest fiber in the world equal to steel. Silk Therapy is the original weightless, leave-in silk replenishing and reconstructing treatment to repair, smooth and protect all hair types. Benefits: Ideal for all hair types Leave in replenishing & reconstructing treatment Fills any voids in cuticle layer Aids in preventing split ends Provides incredible shine

Language ‏ : ‎ English


Product Dimensions ‏ : ‎ 10.5 x 15 x 5.6 inches; 5.64 ounces


Manufacturer recommended age ‏ : ‎ 18 months - 8 years


Item model number ‏ : ‎ 7


UPC ‏ :


Manufacturer ‏ : ‎ Farouk Systems


Best Sellers Rank: #4,722 in Beauty & Personal Care (See Top 100 in Beauty & Personal Care) #25 in Hair Treatment Masks


#25 in Hair Treatment Masks:


Customer Reviews: 4.7 4.7 out of 5 stars (16,596)


Item Form: Gel


Hair Type: Damaged


Product Benefits: Shining, Smoothening, Split Ends Repair, UV Protection


Scent Name: Amber


Additional Features: Natural Ingredients, Not Tested On Animals


Package Type Name: Bottle


Hair Conditioner Type: Leave-In Hair Conditioner


Brand Name: BioSilk


Age Range Description: Adult


Item Highlight: Reconstructs & Adds Shine, Smooths & Prevents Split Ends, Sulfate-Free, Paraben-Free, Cruelty-Free


Manufacturer: Farouk Systems


UPC: 885376771088 633911401033 885892172208 885401537894 885529336812 633911651223 633911747223 885376888830


Global Trade Identification Number: 47


Included Components: Active Substance Combinations


Model Number: 7


Manufacturer Part Number:


Unit Count: 5.6 Fluid Ounces


Number of Items: 1


Item Dimensions: 10.5 x 15 x 5.6 inches


Liquid Volume: 5.64 fluid ounces


Item Weight: 5.64 ounces


Size: 5.6 Fl Oz (Pack of 1)


Material Features: Cruelty Free


Material Type Free: BPA Free, Gluten Free, Paraben Free


Active Ingredients: vitamin e


Special Ingredients: Vitamin E


Recommended Uses For Product: Shine


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 16

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.

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Top Amazon Reviews


  • Silky with out oiliness
Size: 5.6 Fl Oz (Pack of 1)
This makes my frizzy hair soft and super silky with out making it look dirty! Love!
Reviewed in the United States on August 25, 2026 by Christy Bennett

  • My All-Time Favorite Hair Product
Size: 34 Fl Oz (Pack of 1)
Love, love, love this! BioSilk Silk Therapy is hands down my favorite product for my hair. It leaves my hair feeling incredibly soft, smooth, and shiny without feeling greasy or weighed down. It really helps tame frizz and makes my ends look healthier, especially when I’m trying to prevent split ends. A little goes a long way, so the bottle lasts a long time too. And the scent… absolutely amazing! I constantly get compliments on how great my hair smells when I use this. If you want shine, softness, and that fresh salon scent, this is a must-have. ... show more
Reviewed in the United States on February 15, 2026 by Roxanne

  • Shine, protection and best aroma
Size: 5.6 Fl Oz (Pack of 1)
I’ve been using BioSilk Silk Therapy Original for years, and it’s still one of my go-to hair products. It leaves my hair feeling soft, smooth, and noticeably healthier without weighing it down. A little goes a long way, and it helps control frizz while adding a nice shine. It’s one of those products I always come back to because it just works. ... show more
Reviewed in the United States on April 21, 2026 by Jennifer Ojeda

  • Good product
Size: 5.6 Fl Oz (Pack of 1)
Smells so good and leaves your hair silky
Reviewed in the United States on August 17, 2026 by Nisayet

  • The best product for your hair
Size: 5.6 Fl Oz (Pack of 1)
Very good hair product, for that type of hair that is very difficult to comb, it really serves too much for me that I have curly hair
Reviewed in the United States on July 21, 2026 by Alan Pazmino

  • Great product but sometimes difficult to use
Size: 5.6 Fl Oz (Pack of 1)
The product works well with two caveats. One, the product is thick, and I find it difficult to distribute it on my dry hair even on the ends. I get a clump one area and nothing in other areas. I have only tried it on dry hair, so maybe I should try it on wet. But where it does get applied, it’s magical, and how it softens the hair and shines TWO, the bottle leaks. I don’t know if after the first use there’s some oily product in the closable top and thus it no longer closes all the way. I’ve wasted at least a third of the bottle via leakage. So beware! Place in a Ziploc bag, if you travel and expect there to be some product in the bag when you land. ... show more
Reviewed in the United States on April 7, 2026 by Karen K

  • Makes my hair soft
Size: 5.6 Fl Oz (Pack of 1)
Love it
Reviewed in the United States on August 8, 2026 by Theresa Marie Price

  • Great for skin! Long time user
Size: 5.6 Fl Oz (Pack of 1)
Previous buyer of this product but not from Amazon. Glad to find it here! Love this stuff
Reviewed in the United States on July 20, 2026 by Michele shaffer

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