HH Simonsen
HH Simonsen Keratin Boost 250ml
HH Simonsen Keratin Boost is designed to effectively restore hair's keratin levels, providing deep and intensive care and nourishment. It leaves hair shiny and vibrant. The product is intended for use with the HH Simonsen Nourishing Styler, where it is transformed into steam for intensive hair care, but can also be used as a 2-4 minute rinse-out treatment before conditioning.
Paraben-free
Color-safe
Heat Protection
Damage Repair
Dryness
Breakage
Optimized for Your Environment & Lifestyle
Nykaa
In stock
Recommended
HH Simonsen Keratin Boost 250ml
HH Simonsen
hh-simonsen-keratin-boost-250ml
Hair Treatment
10407589642533
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:
Healthy to moderately damaged hair experiences over-conditioning or protein overload causing limpness or rigidity
Water Quality:
Dry or dull hair experiences increased brittleness from protein concentration without moisture balance
Hair:
Closed cuticles resist product penetration causing surface buildup without internal benefits
Active Lifestyle:
High activity and frequent washing rapidly strip product benefits requiring excessive reapplication
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 treatment with 14 ingredients
Who Is It For
All ages and genders
Budget
$36.10 - $72.20
Timeline
Immediate improvement in shine and vibrancy; continued use restores keratin levels
Why Youโll Love It
What Does It Help With?
Restoring keratin levels, Providing deep care and nourishment, Enhancing shine and vibrancy
Best for
Damage Repair
Features
Restores hair's keratin levels, Provides deep and intensive care, Leaves hair shiny and vibrant, Paraben-free, Not tested on animals
Checks
Paraben-free, Not tested on animals
Ingredients Overview
Ingredients List
aqua, peg-12-dimethicone, silicone-quaternium-18, hydrolyzed-keratin, cocodimonium-hydroxypropyl-hydrolyzed-wheat-protein, glycerin, aloe-barbadensis-leaf-juice, sodium-hyaluronate, trideceth-6, trideceth-12, phenoxyethanol, citric-acid, caprylyl-glycol, sorbic-acid
Key Ingredients
Hydrolyzed keratin, Aloe barbadensis leaf juice, Sodium hyaluronate
Ingredients Details
Aloe Barbadensis Leaf Juice
Common Name(s): Aloe barbadensis leaf juice,cosmetic active,functional ingredient
CAS Number: N/a
DESCRIPTION
What It Does: Delivers characteristic cosmetic function โ skin conditioning, protection, preservation, or active biological benefit โ at recommended use concentration.
Why It's Used: Selected for its functional contribution and formulation compatibility โ supported by cosmetic science literature and regulatory safety assessment.
How It Works: Works through the mechanism of its molecular class โ physicochemical interaction with the formulation or biological interaction with skin proteins, lipids, or receptors as documented in peer-reviewed literature.
Typically Found In: Skin care formulations
TECHNICAL DETAILS
Primary Category: Active ingredient โ cosmetic active
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ10%
SOURCING & ETHICS
Vegan Status: Conditional
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: Good safety profile at recommended concentrations. ewg score: 1โ2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Aloe barbadensis leaf juice delivers documented functional benefit with an established safety profile within the cosmetic regulatory framework (cosing eu, cir usa).
Last Verified: Cosing database,aloe barbadensis leaf juice technical literature
Primary Sources: 2026-03-12
Glycerin
Common Name(s): Glycerol,glycerine,1,2,3-propanetriol
CAS Number: 56-81-5
DESCRIPTION
What It Does: Glycerin pulls water from the environment and deeper skin layers into the outer skin layer (epidermis), boosting moisture levels and keeping skin soft, smooth, and plump.
Why It's Used: It is used in virtually every moisturizer, serum, and cleanser because it is highly effective at hydrating skin, is well-tolerated by all skin types, and enhances the texture and spreadability of formulations.
How It Works: As a humectant, glycerin forms hydrogen bonds with water molecules, trapping them in the skin. it also reinforces the skin barrier by integrating into lipid structures between skin cells.
Typically Found In: Moisturizers,serums,cleansers,toners,sheet masks,sunscreens,body lotions,shampoos,conditioners
TECHNICAL DETAILS
Primary Category: Humectant
Secondary Functions: Skin barrier support,emollient,solvent
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ30% (typical: 3โ10%)
SOURCING & ETHICS
Vegan Status: Yes โ plant-derived (coconut, soy, palm) or synthetic
Halal Status: Yes โ when plant-derived or synthetic; verify source with supplier
Source Notes: Derived from plant oils via hydrolysis or saponification; synthetic versions also available. palm-derived glycerin carries sustainability concerns.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low; non-irritating at all standard concentrations
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Extremely rare allergic reactions; generally safe for all skin types including sensitive and baby skin
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Widely recognized as safe. ewg hazard score: 1. no significant concerns for irritation, sensitization, or toxicity at typical concentrations (up to 50%).
Works Well With: Hyaluronic acid,ceramides,niacinamide,panthenol,urea,peptides,retinol,ahas/bhas
Avoid Combining With: No known incompatibilities at standard concentrations
SCIENTIFIC NOTE
Glycerin is an endogenous skin component found naturally in the stratum corneum. aquaporin-3 channels in keratinocytes facilitate glycerin transport, making it integral to natural skin hydration pathways.
Last Verified: Cosing database,cir safety assessment,ewg skin deep,inci decoder
Primary Sources: 2026-03-12
Hydrolyzed Keratin
Common Name(s): Keratin peptides,soluble keratin,hydrolyzed wool protein
CAS Number: 69430-36-0
DESCRIPTION
What It Does: Repairs hair structure by penetrating and rebonding with damaged hair keratin proteins.
Why It's Used: The authentic hair repair ingredient โ same protein composition as hair itself, providing structural repair from within the cortex rather than surface coating alone.
How It Works: Hydrolyzed keratin peptides (500-2000 da) penetrate cuticle and cortex. cysteine thiol groups form disulfide bonds with oxidized keratin (rebonding). cross-links damaged cortex protein for improved tensile strength and reduced breakage. surface film formation fills cuticle gaps.
Typically Found In: Damage repair conditioners,hair masks,professional treatments
TECHNICAL DETAILS
Primary Category: Active ingredient โ keratin peptide
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%โ10%
SOURCING & ETHICS
Vegan Status: Conditional โ from wool (ovis aries) keratin; plant alternatives limited
Halal Status: Conditional โ wool source; verify halal certification
Source Notes: From hydrolyzed wool or feather keratin. plant-based (wheat keratin analog) available but different amino acid profile. marine keratin from squid pen also available.
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: Good safety profile at recommended concentrations. ewg score: 1โ2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Hair keratin is unique in its high cysteine content (~14%) forming extensive disulfide bond crosslinks. these disulfide bonds are disrupted by bleaching, heat, and chemical processing. hydrolyzed keratin's cysteine groups physically rebond into these disrupted sites โ a structural repair mechanism specific to keratin chemistry not achievable with any other protein hydrolysate.
Last Verified: Cosing database,robbins hair science,cir safety assessment
Primary Sources: 2026-03-12
Phenoxyethanol
Common Name(s): 2-phenoxyethanol,rose ether,ethylene glycol monophenyl ether
CAS Number: 122-99-6
DESCRIPTION
What It Does: Prevents microbial contamination and spoilage in cosmetic formulations.
Why It's Used: The benchmark cosmetic preservative โ eu-permitted up to 1%, effective against virtually all cosmetically relevant microorganisms, and excellent tolerability.
How It Works: Phenol ring provides broad antimicrobial activity via disruption of bacterial and fungal cell membranes and inhibition of enzymatic activity. effective against gram-positive and gram-negative bacteria, yeasts (candida), and molds (aspergillus). activity ph range: 3-9.
Typically Found In: All cosmetic formulations as primary preservative
TECHNICAL DETAILS
Primary Category: Functional ingredient โ broad-spectrum preservative
Secondary Functions: Skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.1%โ1% (eu max 1%)
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 cosmetics regulation max 1%. sccs assessed as safe at โค1%. avoid use around eyes in baby products per some country regulations. ewg score: 4.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Phenoxyethanol's widespread adoption as the primary cosmetic preservative followed the phaseout of parabens from many formulations in the 2000s-2010s. despite having a comparable or better safety profile to parabens, it is often cited in 'free-from' formulations โ a consumer perception issue rather than a scientific safety concern.
Last Verified: Cosing database,sccs opinion on phenoxyethanol,cir safety assessment
Primary Sources: 2026-03-12
Personalized Usage Instructions
How to Use
Step 1
Pour the liquid into the small container of the HH Simonsen Nourishing Styler and use the straightener to style your hair as desired
Step 2
Alternatively, apply Keratin Boost directly to damp hair, leave for 2-4 minutes, rinse out, and then apply conditioner
Medical Chemicals
Protein/Moisture
- Protein
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
Pour the liquid into the small container of the HH Simonsen Nourishing Styler and use the straightener to style your hair as desired. Alternatively, apply Keratin Boost directly to damp hair, leave for 2-4 minutes, rinse out, and then apply conditioner.
Product Information
Paraben-free
Not tested on animals