Biosilk
Biosilk Silk Therapy Lite
An ultra-light leave-in reconstructing treatment formulated to give fine and thin hair a smooth and silky appearance without weighing it down or adding excess oil.
Color-safe
Damage Repair
Frizz
Split Ends
Dullness
Fine
Optimized for Your Environment & Lifestyle
Nykaa
In stock
Recommended
Biosilk Silk Therapy Lite
Biosilk
biosilk-silk-therapy-lite
Leave-In Treatment
10407555563813
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 reconstructing treatment with 8 ingredients
Who Is It For
Adults
Budget
$32.50 - $65.00
Timeline
Why Youโll Love It
What Does It Help With?
Strengthening hair, preventing split ends, adding shine, smoothing hair
Best for
Fine or thin hair seeking smoothness and shine
Features
Ultra-light formula, does not weigh down hair, strengthens with silk proteins, fills cuticle voids, prevents split ends, provides shine, suitable for fine or thin hair
Checks
Ingredients Overview
Ingredients List
Cyclopentasiloxane, Cyclotetrasiloxane, Caprylyl-Methicone, Phenyl-Trimethicone, C12-15-Alkyl-Benzoate, Phenoxyethanol, Ethyl-Ester-of-Hydrolyzed-Silk, Fragrance-(Parfum), Butylphenyl-Methylpropional, Alpha-Isomethyl-Ionone, Benzyl-Benzoate, Citronellol, Geraniol, Hydroxycitronellal, Limonene, Linalool
Key Ingredients
Cyclopentasiloxane, Cyclotetrasiloxane, Caprylyl Methicone, Phenyl Trimethicone, Ethyl Ester of Hydrolyzed Silk
Ingredients Details
Caprylyl Methicone
Common Name(s): Caprylyl methicone,specialty silicone polymer,conditioning performance silicone
CAS Number: N/a
DESCRIPTION
What It Does: Provides specialty silicone performance โ elastomeric skin feel, water-soluble silicone activity, or enhanced hair cuticle conditioning โ depending on the specific functional modification.
Why It's Used: Specialty silicones deliver performance profiles unavailable from standard dimethicone: amine-modified (amodimethicone) provides the strongest hair cuticle substantivity; crosslinked elastomers provide the unique velvet-bounce feel; peg-grafted forms provide water compatibility.
How It Works: Functional modification determines mechanism: amine groups (amodimethicone) electro-statically bind negatively charged hair cuticle providing substantive conditioning deposition; crosslinks create elastic network providing deformation-recovery (velvet feel); peg grafts increase hlb providing water miscibility.
Typically Found In: Hair conditioners,primers,specialty formulas
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: 0.5%โ20%
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
Amodimethicone's amine groups have pka ~9 โ at typical conditioner ph 4โ5, they are fully protonated (โnhโโบ) providing maximum cationic character for electrostatic attraction to negatively charged damaged hair cuticle.
Last Verified: Cosing database,specialty silicone performance review
Primary Sources: 2026-03-12
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
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
Place a small amount in palms and apply from mid-lengths to ends
Step 2
Can be used on wet or dry hair and skin
Step 3
Use as often as needed
Medical Chemicals
Protein/Moisture
- Protein
pH Level
-
Porosity Taget
- Low Porosity
Customized for Your Profile
Scalp Condtions
Sensitive Scalp
Climate Suitability
Humid, Dry, UV Protection
Clinical Claims
Frequency
Place a small amount in palms and apply from mid-lengths to ends. Can be used on wet or dry hair and skin. Use as often as needed.