BioSilk Silk Therapy Original Leave-In Silk Protein Treatment 5.64 oz — Lightweight Shine & Frizz Control

BioSilk Silk Therapy Original is a lightweight, leave-in silk protein treatment that smooths, adds shine, and helps reduce split ends for all hair types.

Created from natural silk proteins, BioSilk's Original Silk Therapy replenishes and reconstructs strands without weighing hair down. The formula delivers a blend of silk-derived amino acids and conditioning agents designed to fill gaps in the hair cuticle, tame frizz, and boost surface shine. Free of sulfates and parabens and developed cruelty-free, this treatment works on wet or dry hair as a finishing serum, detangler, or protective layer before heat styling.

How does Silk Therapy improve hair texture and shine?

Silk proteins adhere to the hair surface, smoothing raised cuticles so light reflects more evenly—this produces a visible increase in shine and a softer feel. The treatment helps seal fragile areas to reduce roughness and surface porosity that makes hair look dull.

• Silk-based amino acids smooth the cuticle for a glossier finish.
• Lightweight formula avoids heaviness on fine or thin hair.
• Reduces frizz for sleeker-looking strands in humid conditions.

Can I use BioSilk on colored, fine, or textured hair?

Yes—Silk Therapy Original is formulated for all hair types, including colored, chemically treated, fine, curly, and textured hair. Because it’s weightless and free from sulfates and parabens, it integrates easily into varied care routines without stripping color or overwhelming delicate strands.

• Safe as a finishing serum on color-treated hair to enhance shine.
• Works on fine hair without creating build-up when applied sparingly.
• Helps detangle and define waves or curls while providing slip.

How and when should I apply this leave-in treatment?

Apply a small amount to towel-dried hair to detangle and lock in moisture, or use a pea-sized drop on dry ends to smooth frizz and add shine. It can be used before heat styling for added surface protection, or as a midday refresher to restore manageability and luster.

• On wet hair: distribute through mid-lengths to ends for conditioning and easier styling.
• On dry hair: smooth over ends and surface flyaways for instant polish.
• Use sparingly—start with a small amount and add more only if needed.

What benefits should I expect with regular use?

Regular use helps maintain smoother cuticles and reduces the appearance of split ends while preserving natural movement. Instead of heavy coating, the silk proteins aim to strengthen and fill microscopic gaps in the hair fiber to maintain a healthier-looking surface over time.

• Improved shine and smoother texture after each application.
• Less visible fraying at the ends with consistent use.
• Enhanced manageability, making styling and detangling easier.

Who is this for: BioSilk Silk Therapy Original is suited for anyone seeking a versatile, non-greasy leave-in treatment—from those with fine, color-treated tresses to people with thick, textured hair who want added shine and smoother ends. It’s a practical step for daily grooming or targeted repair when you want salon-like polish without heavy buildup.

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