Earth Rhythm
Earth Rhythm Argan & Black Castor Oil Solid Conditioner Bar Cardboard, Balance Scalp pH
Earth Rhythm Solid Conditioner Bar with Argan & Black Castor Oil is an all-natural hair conditioning bar infused with argan oil, castor oil, and shea butter. It deeply conditions, locks moisture, repairs hair, prevents dryness, reduces frizziness, and boosts shine. Formulated without parabens, sulphates, and other harmful chemicals. It is organic certified, biodegradable, and packaged in recycled, recyclable materials. pH balanced formula leaves hair nourished and healthy.
Paraben-free
Sulfate-free
Natural
Protein-free
Dryness
Frizz
Optimized for Your Environment & Lifestyle
Nykaa
In stock
Recommended
Earth Rhythm Argan & Black Castor Oil Solid Conditioner Bar Cardboard, Balance Scalp pH
Earth Rhythm
earth-rhythm-argan-black-castor-oil-solid-conditioner-bar-cardboard-balance-scalp-ph
Conditioner
10202921992485
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:
Fine hair becomes weighed down and greasy from heavy formulation
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?
Solid Conditioner Bar with 3 key natural ingredients
Who Is It For
All ages, All genders
Budget
$3.97 - $7.94
Timeline
1-2 minutes leave time for effectiveness
Why Youโll Love It
What Does It Help With?
Dryness, Frizz, Hair damage, Shine
Best for
Dryness
Features
Organic and natural, deep conditioning, enriched with argan oil, castor oil and shea butter, moisturizes and protects hair, prevents dryness, reduces frizz, boosts shine, pH balanced
Checks
Organic Certified, Paraben-free, Sulfate-free, Plastic-free packaging
Ingredients Overview
Ingredients List
organic-butyrospermum-parkii-shea-butter,argania-spinosa-argan-kernel-oil,ricinus-communis-castor-seed-oil,guar-hydroxypropyl-trimonium-chloride,quaternium-91,cetrimonium-methosulfate,cetearyl-alcohol,dipalmitoylethyl-dimonium-chloride,tocopheryl-acetate,grapefruit-essential-oil
Key Ingredients
Argan Oil, Castor Oil, Shea Butter
Ingredients Details
Argan Oil
Common Name(s): Argan oil,moroccan oil
CAS Number: 223747-87-3
DESCRIPTION
What It Does: Conditions and nourishes skin and hair with exceptional fatty acid, squalene, and tocopherol content.
Why It's Used: Premium multi-nutrient facial and hair oil โ its unique phytosterol and squalene composition provides anti-aging benefits beyond simple emolliency.
How It Works: Balanced oleic/linoleic acid ratio provides both emolliency and barrier repair. high squalene content (6-7%) provides antioxidant and sebum-compatible emolliency. tocopherols provide antioxidant stability and skin benefit. phytosterols inhibit 5-alpha-reductase and reduce inflammation.
Typically Found In: Premium facial oils,hair oils,anti-aging products
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Squalene content,phytosterol activity,anti-aging
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ100%
SOURCING & ETHICS
Vegan Status: Yes โ from argania spinosa kernels
Halal Status: Yes
Source Notes: Cold-pressed from roasted (food) or unroasted (cosmetic) argan kernels. unesco world heritage traditional production. fair trade certified sources available.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
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
Argan oil's squalene content (6-7%) is among the highest of all plant oils, second only to olive oil. squalene is an endogenous skin lipid that declines with age, making argan oil's high squalene level particularly relevant for anti-aging facial use โ replenishing both essential fatty acids and age-depleting skin lipids simultaneously.
Last Verified: Cosing database,boucetta et al. argan oil review,cir safety assessment
Primary Sources: 2026-03-12
Castor Oil
Common Name(s): Castor oil,botanical carrier oil,emollient fatty acid delivery
CAS Number: N/a
DESCRIPTION
What It Does: Softens and conditions skin by integrating into sc lipid bilayers, delivers essential fatty acids (oleic, linoleic, linolenic) for barrier lipid synthesis, and provides rich, non-stripping moisturisation.
Why It's Used: Natural carrier oils provide the closest compositional match to endogenous sc lipids, delivering emolliency through genuine barrier integration rather than simple surface occlusion.
How It Works: Fatty acid triglycerides partition into sc lipid bilayers โ oleic acid (c18:1) provides fluid, emollient integration; linoleic acid (c18:2) acts as essential ceramide precursor; saturated fatty acids provide more occlusive barrier reinforcement.
Typically Found In: Moisturisers,facial oils,natural skin care
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%โ100%
SOURCING & ETHICS
Vegan Status: Conditional
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
Essential fatty acids โ linoleic (c18:2, n-6) and ฮฑ-linolenic (c18:3, n-3) acids โ cannot be synthesised by the body; topical delivery through carrier oils provides direct substrate for ceramide and eicosanoid biosynthesis in the epidermis.
Last Verified: Cosing database,castor oil carrier oil botanical review
Primary Sources: 2026-03-12
Quaternium-91
Common Name(s): Quaternium-91
DESCRIPTION
What It Does: Delivers targeted skin-conditioning or bioactive benefits through a specific mechanism of action suited to the formulation's intended purpose.
Why It's Used: Specialty actives address specific skin concerns through targeted molecular mechanisms, providing efficacy beyond what base formulation ingredients alone can achieve.
How It Works: The bioactive compound interacts with specific molecular targets in skin cells or the extracellular matrix โ enzymes, receptors, structural proteins, or signaling molecules โ triggering beneficial biological responses.
Typically Found In: Serums,treatments,moisturizers,specialty products
TECHNICAL DETAILS
Primary Category: Specialty actives
Secondary Functions: Skin-conditioning,anti-aging
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.01โ5%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Specialty active ingredient; check individual sourcing for vegan status.
SKIN COMPATIBILITY
Irritancy Rating: 1
Comedogenicity Rating: 0
Sensitivity Concerns: Low sensitization potential at recommended use concentrations.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Well-characterized cosmetic ingredient with established safety profile. generally non-irritating at typical use concentrations. suitable for leave-on and rinse-off cosmetics.
Works Well With: Niacinamide,hyaluronic acid,vitamin c,peptides
Avoid Combining With: Incompatible with oxidizing agents; check ph stability
SCIENTIFIC NOTE
Specialty actives typically work through enzyme inhibition (e.g., tyrosinase inhibition for brightening, mmp inhibition for anti-aging), receptor activation (e.g., retinoid receptors, ppar-ฮณ for barrier genes), or transcription factor modulation (e.g., nrf2 for antioxidant gene upregulation). structure-activity relationships determine potency and selectivity.
Last Verified: Cosing eu database; pcpc cosmetic ingredient safety reviews; ingredient-specific safety and efficacy literature
Primary Sources: 2025-01-15
Shea Butter
Common Name(s): Shea butter,karite butter
CAS Number: 91080-23-8
DESCRIPTION
What It Does: Provides deep nourishing emolliency with anti-inflammatory cinnamic acid esters and a uniquely rich unsaponifiable fraction.
Why It's Used: The most nutritious plant butter โ unique cinnamic acid esters, lupeol, and rich unsaponifiable fraction provide anti-inflammatory and wound healing benefits beyond standard fatty acid emolliency.
How It Works: Cinnamic acid esters absorb uv radiation providing mild natural uv filtering (spf 3-4). lupeol inhibits nf-kb for anti-inflammatory activity. high stearic acid provides occlusive barrier function. rich unsaponifiable fraction (4-9%) provides phytosterols, tocopherols, and triterpenes for bioactive skin benefits.
Typically Found In: Body butters,rich moisturizers,baby products,hair conditioners,lip balms
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Cinnamic acid uv support,lupeol anti-inflammatory,rich emolliency
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ100%
SOURCING & ETHICS
Vegan Status: Yes โ from butyrospermum parkii nuts
Halal Status: Yes
Source Notes: Unrefined (raw) shea retains more unsaponifiable fraction and stronger natural scent/color. refined shea is odorless, white, and cleaner for formulation. certified fair trade supports west african women's cooperatives.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic (refined); 2/5 โ low (raw/unrefined)
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
Shea butter's unsaponifiable fraction (4-9%, vs coconut oil's 0.5% and olive oil's 1-2%) is exceptionally rich in triterpenes, phytosterols, and tocopherols. this fraction is responsible for shea's anti-inflammatory and wound healing properties that simple fatty acid analysis fails to reveal.
Last Verified: Cosing database,lin et al. shea butter cinnamic acid study,cir safety assessment
Primary Sources: 2026-03-12
Personalized Usage Instructions
How to Use
Step 1
Pick up the conditioner bar and hold it in the palm of one hand
Step 2
Run the bar along your hair from temples to nape, cover ear to ear
Step 3
For long hair, lift hair off neck and work conditioner bar in circular motions at the back of head
Step 4
Pull hair over one shoulder, run conditioner bar down the hair focusing on ends
Step 5
Massage from root to tip and leave for 1-2 minutes
Medical Chemicals
Protein/Moisture
- Moisture
pH Level
- Acidic
Porosity Taget
- Normal Porosity
Customized for Your Profile
Scalp Condtions
pH Balanced, Oil Control
Climate Suitability
Humid, Dry, Soft Water, UV Protection, Pollution Shield, Winter, Summer
Clinical Claims
Clinically effective, organic certification, pH balanced formula
Frequency
Pick up the conditioner bar and hold it in the palm of one hand. Run the bar along your hair from temples to nape, cover ear to ear. For long hair, lift hair off neck and work conditioner bar in circular motions at the back of head. Pull hair over one shoulder, run conditioner bar down the hair focusing on ends. Massage from root to tip and leave for 1-2 minutes.
Product Information
Organic Certified
Paraben-free
Sulfate-free
Plastic-free packaging