Biosilk
Biosilk Silk Therapy Original
BioSilk Silk Therapy Original is a weightless, leave-in silk replenishing and reconstructing treatment to repair, smooth, and protect all hair types.
Paraben-free
Color-safe
Heat Protection
Anti-Frizz
Damage Repair
Frizz
Optimized for Your Environment & Lifestyle
Nykaa
In stock
Recommended
Biosilk Silk Therapy Original
Biosilk
biosilk-silk-therapy-original
Leave-In Treatment
10407554908453
Morning or Evening?
How often will you use this product?
Notes
Secure payment protection
Your Biodata Compatibility Analysis
Based on your 6 hair health indices and environmental factors
Poor Match
Significant incompatibilities
Growth Cycle Health Index
Hair Match
Hair Health Index Alignment
Optimal for OSI, SSI, DI, HSI
Ingredient Efficacy
Matching Ingredient Score
Environment Compatibility
Current UV, Air Quality & Humidity
Why This Works for Your Specific Profile
Damage Index:
Damage levels outside specified range may not benefit optimally from product formulation
Water Quality:
Dry or dull hair experiences increased brittleness from protein concentration without moisture balance
Hair:
Closed to moderately open cuticles limit product penetration causing surface buildup or inadequate absorption
Active Lifestyle:
Activity levels outside optimal range affect product performance and maintenance requirements
Your Hair Profile Integration
Your Hair Archetype
Density Level
Washing Frequency
Shedding Level
Oil Level
Your Hair Health Indices
Oil Secretion (OSI)
Very low oil production
Scalp Sensitivity (SSI)
Very low sensitivity
Growth Rate (CMR)
Poor metabolism rate
Damage Index (DI)
Minimal damage
Hair Strength (HSI)
Very weak strength
Softness Index (SI)
Significant improvement needed
Water & Environmental Integration
Water:
Expected Results & Timeline
Key Highlights
What is it?
Leave-in silk replenishing and reconstructing treatment with 12 ingredients
Who Is It For
All ages and genders
Budget
$32.50 - $65.00
Timeline
Immediate shine and smoothness
Why Youโll Love It
What Does It Help With?
Repairing damaged hair, smoothing frizz, preventing split ends
Best for
Damage Repair
Features
Fills voids in cuticle to create smooth hair, aids in preventing split ends, provides incredible shine
Checks
Paraben-free, Color-safe
Ingredients Overview
Ingredients List
Cyclopentasiloxane, Cyclotetrasiloxane, Dimethiconol, Cyclohexasiloxane, Alcohol-Denat, C12-15-Alkyl-Benzoate, Phenoxyethanol, Panthenol, Ethyl-Ester-of-Hydrolyzed-Silk, Fragrance-Parfum, Benzyl-Benzoate, Hexyl-Cinnamal, Linalool, Alpha-Isomethyl-Ionone, Citronellol, Geraniol, Hydroxycitronellal, Butylphenyl-Methylpropional, Eugenol
Key Ingredients
Cyclopentasiloxane, Dimethiconol, Panthenol, Ethyl Ester of Hydrolyzed Silk
Ingredients Details
Citronellol
Common Name(s): (r)-3,7-dimethyl-6-octen-1-ol,rhodinol
CAS Number: 106-22-9
DESCRIPTION
What It Does: Provides soft, lasting rose-floral fragrance note.
Why It's Used: Essential rose fragrance monoterpene for lasting smooth floral notes in high-quality perfumery and cosmetic fragrances.
How It Works: Allylic alcohol monoterpene provides fixative property in fragrance blends. good skin substantivity for lasting scent. softer, rounder rose note vs geraniol's fresher character. natural in rose otto at 18-34%.
Typically Found In: Rose perfumes,floral fragrances,luxury skincare
TECHNICAL DETAILS
Primary Category: Fragrance component โ monoterpene alcohol
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.001%โ1%
SOURCING & ETHICS
Vegan Status: Yes โ from rose, geranium, citronella oils
Halal Status: Yes
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Eu cosmetics regulation: declared fragrance allergen. ifra guidelines apply.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Citronellol's r-enantiomer (natural) vs s-enantiomer (synthetic) provide meaningfully different scent character โ a remarkable demonstration of chiral scent discrimination by olfactory receptors. the (r) form provides the characteristic rose note while the (s) form has a distinctly different, less pleasant character. this enantiomeric scent difference means that the biological handedness of naturally-sourced vs racemic synthetic citronellol produces perceptibly different fragrance quality.
Last Verified: Cosing database,ifra standards
Primary Sources: 2026-03-12
Cyclohexasiloxane
Common Name(s): D6,cyclomethicone d6,hexamethylcyclotrisiloxane
CAS Number: 540-97-6
DESCRIPTION
What It Does: Provides volatile silicone delivery with longer contact time than d5 for extended active delivery.
Why It's Used: Longer-evaporation volatile silicone for formulations requiring extended delivery contact time vs d5's rapid evaporation.
How It Works: Larger ring (6 silicone units) provides lower vapor pressure than d5 (5 units). slower evaporation rate (2-3ร longer than d5) provides extended delivery window. same dry-touch after complete evaporation.
Typically Found In: Longer-duration volatile vehicles,serum formulations
TECHNICAL DETAILS
Primary Category: Functional ingredient โ volatile cyclic silicone
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ30%
SOURCING & ETHICS
Vegan Status: Yes โ synthetic
Halal Status: Yes
Source Notes: Commercially produced for cosmetic use. verify vegan/halal status with supplier.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Well-tolerated by most skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Eu restrictions on d5 do not apply to d6 โ d6 may be used in rinse-off products without restriction.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
The different evaporation rates of d4 (methylcyclosiloxane), d5, and d6 provide formulators with a toolkit of volatile silicone delivery windows: d4 evaporates in ~1 minute, d5 in ~5 minutes, d6 in ~15 minutes. blending these provides precisely tunable evaporation kinetics for specific delivery timing requirements.
Last Verified: Cosing database,dow silicone technical data,cir safety assessment
Primary Sources: 2026-03-12
Cyclopentasiloxane
Common Name(s): Cyclopentasiloxane,cyclic volatile silicone,dry-touch carrier solvent
CAS Number: N/a
DESCRIPTION
What It Does: Provides a dry, weightless application vehicle that evaporates cleanly leaving actives and non-volatile silicones deposited on skin โ eliminating the residual heaviness of conventional liquid carrier solvents.
Why It's Used: Cyclosiloxanes are the unique volatile silicone solvents that dissolve non-volatile silicones (dimethicone, cyclomethicone), organic uv filters, and lipophilic actives, providing the sensory-superior dry-touch application experience in premium formulations.
How It Works: Cyclosiloxane vapour pressure (d5 cyclopentasiloxane ~0.3 mmhg at 25ยฐc) provides clean evaporation at body temperature. the cyclic ring structure provides lower boiling point than equivalent linear dimethicone, enabling faster evaporation while the ring conformation maintains the silicone's low surface energy for smooth application.
Typically Found In: Primers,antiperspirants,sunscreens
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Barrier sealing,softening
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ50%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Plant-derived, synthetic or animal-derived. verify source.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ low; formulation-dependent
Sensitivity Concerns: Non-irritating.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Humectants,ceramides,actives as carrier
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Cyclopentasiloxane (d5) and cyclohexasiloxane (d6) are under eu regulatory review for potential environmental persistence (pbt assessment) โ formulators should monitor eu regulation 2018/35 implementation for restrictions in wash-off products.
Last Verified: Cosing database,eu cyclosiloxane regulatory review
Primary Sources: 2026-03-12
Cyclopentasiloxane
Common Name(s): Cyclopentasiloxane,cyclic volatile silicone,dry-touch carrier solvent
CAS Number: N/a
DESCRIPTION
What It Does: Provides a dry, weightless application vehicle that evaporates cleanly leaving actives and non-volatile silicones deposited on skin โ eliminating the residual heaviness of conventional liquid carrier solvents.
Why It's Used: Cyclosiloxanes are the unique volatile silicone solvents that dissolve non-volatile silicones (dimethicone, cyclomethicone), organic uv filters, and lipophilic actives, providing the sensory-superior dry-touch application experience in premium formulations.
How It Works: Cyclosiloxane vapour pressure (d5 cyclopentasiloxane ~0.3 mmhg at 25ยฐc) provides clean evaporation at body temperature. the cyclic ring structure provides lower boiling point than equivalent linear dimethicone, enabling faster evaporation while the ring conformation maintains the silicone's low surface energy for smooth application.
Typically Found In: Primers,antiperspirants,sunscreens
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Barrier sealing,softening
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ50%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Plant-derived, synthetic or animal-derived. verify source.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ low; formulation-dependent
Sensitivity Concerns: Non-irritating.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Humectants,ceramides,actives as carrier
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Cyclopentasiloxane (d5) and cyclohexasiloxane (d6) are under eu regulatory review for potential environmental persistence (pbt assessment) โ formulators should monitor eu regulation 2018/35 implementation for restrictions in wash-off products.
Last Verified: Cosing database,eu cyclosiloxane regulatory review
Primary Sources: 2026-03-12
Personalized Usage Instructions
How to Use
Step 1
Shake well before use
Step 2
Place a small amount of silk therapy in the palms and apply from the scalp to ends
Step 3
May be used on wet or dry hair or skin
Step 4
Use as often as necessary
Medical Chemicals
Protein/Moisture
- Protein/Moisture balance
pH Level
- Acidic
Porosity Taget
- High Porosity
Customized for Your Profile
Scalp Condtions
Sensitive Scalp, pH Balanced
Climate Suitability
Humid, Dry, UV Protection
Clinical Claims
Frequency
Shake well before use. Place a small amount of silk therapy in the palms and apply from the scalp to ends. May be used on wet or dry hair or skin. Use as often as necessary.
Product Information
Paraben-free
Color-safe