Keratin Complex Intense RX Bond Repair Serum

Keratin Complex

Keratin Complex Intense RX Bond Repair Serum

Keratin Complex's Intense RX Bond Repair Serum is the ultimate split end remedy powered by Keratin Complex's proprietary Signature Keratin. It improves the hair's strength and resilience while reducing breakage and split ends in just one use. Suitable for all hair types and color shades.

Sulfate-free

Paraben-free

Color-safe

Silicone-free

Protein-free

Heat Protection

Optimized for Your Environment & Lifestyle

Nykaa

In stock

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Keratin Complex Intense RX Bond Repair Serum

Keratin Complex

keratin-complex-intense-rx-bond-repair-serum

Hair Serum

10364999434533

Morning or Evening?

Morning
Evening
Both

How often will you use this product?

Everyday
Every other day
Every 3 days
Every 4 days
Every 5 days
Every 6 days
Once a week
Twice a week
On specific days
As needed
On rotation

Notes

Add to Routine
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Your Biodata Compatibility Analysis

Based on your 6 hair health indices and environmental factors

0 HAIR HEALTH SCORE

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:

Fine hair becomes weighed down and greasy from heavy formulation

Hair:

Closed cuticles resist product penetration causing surface buildup without internal benefits

Active Lifestyle:

Activity levels outside optimal range affect product performance and maintenance requirements

Add to Your Routine

Current Routine Fit

Apply tiny amount to ends after styling, seals splits temporarily

Recommended Routine Order

1.
2.
3.

Your Hair Profile

Hair Type

Damage Level

Porosity

Scalp Sensitivity

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?

Hair Serum, 1.5 oz

Who Is It For

Adults, All Genders

Budget

$38.00 - $76.00

Timeline

Why Youโ€™ll Love It

What Does It Help With?

Damage Repair, Frizz, Breakage, Split Ends

Best for

Damage Repair

Features

Repairs damage from hair coloring and heat styling, Revitalizes hair during blow-drying or flat ironing, Reinforces hair's structural proteins and amino acids, Lightweight formula that eliminates frizz and tames flyaways, Detangles and conditions hair, Safe for color-treated hair, Formulated without sodium chloride, No added parabens, No added sodium lauryl sulfate (SLS)

Checks

Sulfate-free, Paraben-free, Color-safe, Silicone-free

Ingredients Overview

Ingredients List

Water, Hydrolyzed Keratin, Guar Gum, Timonacic, Cyclomethicone, Dimethicone, Arnica Montana Flower Water, Cyclopentasiloxane, Fragrance

Key Ingredients

Hydrolyzed Keratin, Arnica Montana Flower Water

Ingredients Details

Arnica Montana Flower Water

Common Name(s): Arnica montana flower water,arnica montana flower water,botanical water/juice,plant-derived hydrosol

CAS Number: N/a

DESCRIPTION

What It Does: Provides gentle skin conditioning from water-soluble plant phytochemicals โ€” mild antioxidant and anti-inflammatory activity at concentrations suited for leave-on application.

Why It's Used: Botanical waters deliver authentic plant phytochemical activity at gentle concentrations โ€” appropriate for direct skin contact where essential oil concentrations would risk sensitisation.

How It Works: Steam distillation co-produces water-soluble aromatics (0.01-0.1% w/w) with characteristic plant fragrance. water-soluble phenolics, organic acids, and polar terpenoids provide gentle antioxidant and anti-inflammatory activity.

Typically Found In: Toners,facial mists,gentle formulas

TECHNICAL DETAILS

Primary Category: Active ingredient โ€“ antioxidant

Secondary Functions: Free radical scavenging,anti-aging

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 5%โ€“90%

SOURCING & ETHICS

Vegan Status: Yes

Halal Status: Yes

Source Notes: Plant-derived extract or synthetic.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 โ€“ very low

Comedogenicity Rating: 0/5 โ€“ non-comedogenic

Sensitivity Concerns: Non-irritating; well-tolerated.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Excellent safety profile. ewg score: 1.

Works Well With: Vitamin c,vitamin e,ferulic acid,spf,other antioxidants

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Hydrosol microbiological stability: high water activity supports microbial growth โ€” complete preservation system essential.

Last Verified: Cosing database,arnica montana flower water botanical water review

Primary Sources: 2026-03-22

Arnica Montana Flower Water

Common Name(s): Arnica montana flower water,arnica montana flower water,botanical water/juice,plant-derived hydrosol

CAS Number: N/a

DESCRIPTION

What It Does: Provides gentle skin conditioning from water-soluble plant phytochemicals โ€” mild antioxidant and anti-inflammatory activity at concentrations suited for leave-on application.

Why It's Used: Botanical waters deliver authentic plant phytochemical activity at gentle concentrations โ€” appropriate for direct skin contact where essential oil concentrations would risk sensitisation.

How It Works: Steam distillation co-produces water-soluble aromatics (0.01-0.1% w/w) with characteristic plant fragrance. water-soluble phenolics, organic acids, and polar terpenoids provide gentle antioxidant and anti-inflammatory activity.

Typically Found In: Toners,facial mists,gentle formulas

TECHNICAL DETAILS

Primary Category: Active ingredient โ€“ antioxidant

Secondary Functions: Free radical scavenging,anti-aging

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 5%โ€“90%

SOURCING & ETHICS

Vegan Status: Yes

Halal Status: Yes

Source Notes: Plant-derived extract or synthetic.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 โ€“ very low

Comedogenicity Rating: 0/5 โ€“ non-comedogenic

Sensitivity Concerns: Non-irritating; well-tolerated.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Excellent safety profile. ewg score: 1.

Works Well With: Vitamin c,vitamin e,ferulic acid,spf,other antioxidants

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Hydrosol microbiological stability: high water activity supports microbial growth โ€” complete preservation system essential.

Last Verified: Cosing database,arnica montana flower water botanical water review

Primary Sources: 2026-03-22

Cyclomethicone

Common Name(s): Cyclomethicone,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%โ€“50%

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%โ€“50%

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

1

Step 1

Shake bottle well

2

Step 2

Pump a small amount of serum into the palm of your hand and gently rub hands together

3

Step 3

Apply serum evenly, brushing hands through hair

4

Step 4

Style as desired

Medical Chemicals

Protein/Moisture

-

pH

pH Level

-

Porosity Taget

-

Customized for Your Profile

Scalp Condtions

Climate Suitability

Clinical Claims

Frequency

Shake bottle well. Pump a small amount of serum into the palm of your hand and gently rub hands together. Apply serum evenly, brushing hands through hair. Style as desired.

Product Information

Sulfate-free

Paraben-free

Color-safe

Silicone-free