BioSilk Silk Therapy for Beautifully Smooth Hair
Harness the transformative power of pure silk protein. Our Silk Therapy collection smooths, strengthens, and adds luminous shine to every hair type — from our iconic original serum to complete care systems.
BioSilk Silk Therapy Essentials
From our legendary silk serum to nourishing shampoos and leave-in treatments, every BioSilk product is infused with silk proteins to deliver salon-quality smoothness at home.
Silk Therapy Original
Our iconic silk-infused serum that started it all. Penetrates the hair cuticle to repair, smooth, and add brilliant shine without weighing hair down.
Silk Therapy Lite
All the smoothing benefits of our original formula in a lighter weight. Perfect for fine or thin hair that craves silk softness without heaviness.
17 Miracle Leave-In Conditioner
Seventeen silk-powered benefits in one bottle. This leave-in conditioner detangles, strengthens, adds shine, and protects against heat — all without rinsing.
Silk Therapy Shampoo
A gentle, silk-enriched cleansing formula that removes buildup while infusing each strand with smoothing proteins. Leaves hair clean, soft, and manageable.
Silk Therapy with Coconut Oil
The nourishing blend of silk proteins and organic coconut oil delivers intense moisture to dry, damaged hair while taming frizz and flyaways.
Thermal Shield Spray
Guard every strand against heat damage up to 450°F. Our silk-infused thermal shield creates a protective barrier while adding lightweight shine and smoothness.
Why Hair Professionals Trust BioSilk
Every BioSilk product is built on real silk protein technology — the same material that gives natural silk its unmatched smoothness and strength.
Pure Silk Protein
Our formulas are infused with natural silk protein that penetrates the hair shaft, filling in gaps and repairing damage from the inside out. This is the core of Silk Therapy — real, measurable results driven by silk science.
Weightless Smoothness
BioSilk Silk Therapy delivers silky, frizz-free smoothness without heavy residue or greasy buildup. Our silk-based technology coats each strand in a breathable layer that keeps hair moving naturally all day long.
Heat & Color Safe
From our Thermal Shield spray to Color Therapy shampoos, BioSilk products are designed to protect hair during high-heat styling and preserve color vibrancy wash after wash.
Complete Hair Systems
BioSilk offers complete silk-infused care — Silk Therapy serums, Hydrating Therapy shampoos, Volumizing Therapy root lifters, and even pet grooming lines. Every product works together for total silk transformation.
What Our Community Says About BioSilk
From professional stylists to everyday silk converts, see why BioSilk Silk Therapy has become a staple in hair care routines everywhere.
I’ve been using BioSilk Silk Therapy Original for years. A few drops after every wash and my hair stays smooth and shiny even in humidity. Nothing else gives me that real silk feel.
Uses Silk Therapy Original
My fine hair always went flat with other serums. BioSilk Silk Therapy Lite gives me the smoothness I want without any heaviness. I finally found a treatment that works for my hair type.
Uses Silk Therapy Lite
As a stylist, I reach for BioSilk before every blowout. The Thermal Shield protects from heat damage and the 17 Miracle Leave-In saves me time on detangling. My clients always ask what I’m using.
Professional Hair Stylist
Frequently Asked About BioSilk Silk Therapy
Everything you need to know about our silk-infused hair care, from choosing the right product to getting the most out of your BioSilk routine.
BioSilk Silk Therapy is a hair care system built around natural silk protein. The silk proteins in our formulas are small enough to penetrate the hair cuticle, where they fill in damage, smooth roughness, and strengthen each strand from within. The result is visibly smoother, shinier, and more manageable hair with every use. Our original Silk Therapy serum remains the foundation of the line, and the technology extends across shampoos, conditioners, leave-in treatments, and styling products.
Both formulas deliver silk protein smoothing and shine, but the weight is different. BioSilk Silk Therapy Original is ideal for medium to thick, coarse, or very damaged hair that needs deep smoothing and frizz control. Silk Therapy Lite provides the same silk-infused benefits in a lighter formula designed for fine, thin, or oily hair types that don’t need as much product weight. Choose Original for maximum smoothing power, or Lite for everyday lightweight silk conditioning.
Apply a small amount of BioSilk Silk Therapy to damp, towel-dried hair — start with a dime-sized drop and add more as needed. Work it through mid-lengths and ends, avoiding the roots to prevent buildup. You can then blow-dry, flat iron, or let your hair air dry. BioSilk also works as a finishing touch on dry hair: warm a tiny amount between your palms and smooth over flyaways and frizzy areas for instant silk-like polish.
Yes. All BioSilk Silk Therapy products are safe for color-treated hair. Our silk protein formulas actually help seal the cuticle, which can prolong color vibrancy between salon visits. For dedicated color protection, we also offer our Color Therapy line — including Color Therapy Shampoo, Conditioner, and our Cool Blonde Shampoo specifically formulated to tone brassiness in blonde, highlighted, and silver hair.
The BioSilk 17 Miracle Leave-In Conditioner delivers seventeen distinct benefits in a single silk-infused spray. It detangles, smooths frizz, adds shine, strengthens strands, provides heat protection, reduces drying time, adds moisture, prevents breakage, boosts body, improves elasticity, restores softness, eliminates static, controls humidity, enhances color, protects against UV, fortifies damaged ends, and creates an all-day silk finish. Spray it on damp hair before styling or on dry hair for a midday refresh.
We do. BioSilk for Dogs brings our silk protein technology to pet grooming. The line includes shampoos, conditioners, detangling sprays, whitening formulas, and waterless shampoos — all developed with the same silk-based approach we use for our human hair care. BioSilk for Dogs products help keep coats soft, shiny, tangle-free, and clean between baths, making grooming easier for both pets and their owners.
Silk Therapy Tips & Hair Care Insights
Expert advice on getting the most from your BioSilk products, understanding silk protein technology, and building the perfect hair care routine.
How to Get the Most from BioSilk Silk Therapy Serum
Master the art of silk serum application — from finding the right amount for your hair type to layering with other BioSilk treatments.
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Building a Complete BioSilk Shampoo & Conditioner Routine
Pair BioSilk Silk Therapy Shampoo with the right conditioner for your hair type — from Hydrating Therapy to Color Therapy and beyond.
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Protect Your Strands: BioSilk Heat Styling Without Damage
Learn why silk protein makes the ideal heat shield and how our Thermal Shield and Silk Therapy serums keep hair protected at every temperature.
Read More →Start Your Silk Therapy Transformation
Discover the full BioSilk collection — silk-infused serums, shampoos, conditioners, heat protectants, and styling products designed to give every hair type the smooth, luminous finish of pure silk.
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