BioSilk Silk Therapy Original leave-in silk protein treatment, 5.64 oz — lightweight shine & split-end control

Developed from BioSilk’s signature silk-infused formula, this 5.64 oz (167 ml) Silk Therapy Original replenishes and reconstructs hair by delivering silk proteins and amino acids that integrate with the hair cuticle. The serum is formulated to be gentle—sulfate-, paraben-, and cruelty-free—so it suits a wide range of hair types and styling routines. Use it as a finishing shine serum, a detangling aid, or a protective layer before heat styling to help improve the look and manageability of your hair.

How does this treatment restore and protect hair?

Silk Therapy Original deposits silk proteins and moisture-binding ingredients along the hair shaft to fill gaps in the cuticle, helping reduce the appearance of damage and smoothing the surface for greater light reflection. The effect is cosmetic rather than medicinal: you’ll see improved shine and smoother texture while strands appear more uniform and resilient to everyday styling stressors.

• Silk proteins help bind to the hair surface to even out rough cuticles.
• Lightweight formulation avoids buildup on fine hair.
• Reduces friction to help prevent breakage during brushing.

Can I use it on wet and dry hair, and how much should I apply?

Yes — the serum works on both damp and dry hair. Apply a small amount to towel-dried hair to detangle and condition before styling, or smooth a tiny drop over dry ends to tame frizz and add shine. Start with a pea-sized amount and increase sparingly for thicker or longer hair to avoid excess residue.

• On damp hair: distributes easily for detangling and protection before heat styling.
• On dry hair: smooths flyaways and adds instant gloss without stiffness.
• Dosage tip: use less for fine hair, a bit more for dense or textured hair.

Is BioSilk Silk Therapy Original suitable for all hair types and routines?

The formula is intentionally versatile—safe for straight, wavy, curly, coily, and chemically treated hair—because it focuses on surface repair and lubrication rather than altering hair structure. It fits into many routines: as a primer for heat tools, a finishing polish, or a daily maintenance serum to help manage frizz and enhance shine.

• Sulfate- and paraben-free for gentler daily use.
• Cruelty-free, suitable for those avoiding animal testing products.
• Works with color-treated and chemically processed hair as a styling aid.

What practical benefits can I expect from regular use?

With consistent application, you can expect smoother-looking strands, easier styling, and improved sheen that makes hair appear healthier. While results vary by hair condition and styling habits, many users notice less frizz, easier detangling, and improved manageability after several applications.

• Improves shine and surface smoothness for a polished finish.
• Helps reduce visible split ends and frizz with repeated use.
• Makes daily styling quicker by reducing tangles and static.

Who is this for: BioSilk Silk Therapy Original is ideal for anyone seeking a lightweight, multi-purpose hair serum that adds shine, aids detangling, and helps smooth damaged cuticles without heavy silicones or harsh surfactants. It’s especially useful for people who use heat tools, have chemically treated or frizz-prone hair, or want an easy finishing product to enhance luster and manageability in everyday styling.

Ingredients

C13-14 Isoalkane Dimethiconol Isododecane Alcohol Denat. Panthenol Ethyl Ester of Hydrolyzed Silk Fragrance (Parfum) Alpha-Isomethyl Ionone Benzyl Benzoate Citronellol Eugenol Geraniol Hexyl Cinnamal Hydroxycitronellal Linalool