Earth Rhythm
Earth Rhythm AHA & Betaine Scalp Scrub, Combats Dandruff and Controls Sebum
Luxurious scalp scrub that exfoliates dry skin and scalp flakes, removes scalp greasiness, gently cleanses for a squeaky-clean feel. Promotes healthy hair growth, keeps hair odour at bay, purifies and invigorates the scalp, removes dirt and pollutants without stripping moisture, protects hair from environmental damage, and stimulates blood circulation to boost hair growth.
Natural
Sulfate-free
Paraben-free
Dandruff
Scalp Issues
Oily Scalp
Optimized for Your Environment & Lifestyle
Nykaa
In stock
Recommended
Earth Rhythm AHA & Betaine Scalp Scrub, Combats Dandruff and Controls Sebum
Earth Rhythm
earth-rhythm-aha-betaine-scalp-scrub-combats-dandruff-and-controls-sebum
Scalp Care
10202921861413
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:
Sensitive scalps experience irritation from active ingredients formulated for resilient skin
Hair:
No porosity-specific conflicts
Active Lifestyle:
Low activity produces insufficient stress or buildup making product intensity unnecessarily harsh
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?
Scalp Scrub with 5 key ingredients
Who Is It For
Adults, All Genders
Budget
$3.62 - $7.24
Timeline
Why Youโll Love It
What Does It Help With?
Dandruff, Greasy scalp, Flakiness, Hair growth
Best for
Scalp Issues
Features
Gently cleanses, removes buildup, reduces dandruff, promotes healthy hair growth, keeps hair odour at bay, exfoliates and purifies scalp, retains moisture and protects hair, stimulate blood circulation.
Checks
100% Authentic, Clinically Tested (by brand claim)
Ingredients Overview
Ingredients List
AHA, Vitamin-B5, Betaine, Walnut-Shell-Powder, Coffee-Seed-Powder
Key Ingredients
AHA, Vitamin B5, Betaine, Walnut Shell Powder, Coffee Seed Powder
Ingredients Details
Aha
Common Name(s): Aha,alpha-hydroxy acid exfoliant,keratolytic active
CAS Number: N/a
DESCRIPTION
What It Does: Exfoliates dead skin cells by disrupting desmosomal adhesion bonds, brightens skin tone, stimulates collagen production, and improves product active penetration through the exfoliated sc.
Why It's Used: Aha exfoliation is the most evidence-backed chemical exfoliation mechanism with 30+ years of clinical use data; different acid sizes allow formulators to select penetration depth and intensity for specific skin types.
How It Works: Aha carboxylic groups donate hโบ disrupting caยฒโบ coordination of desmoglein desmosomal proteins at formulation ph 3โ4, weakening corneocyte cohesion. smaller ahas (glycolic, mw 76) penetrate fastest; larger (mandelic, mw 152) penetrate slower for gentler exfoliation.
Typically Found In: Exfoliating toners,aha serums,anti-aging
TECHNICAL DETAILS
Primary Category: Active ingredient โ alpha hydroxy acid (aha)
Secondary Functions: Brightening,collagen stimulation
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ15%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Fermentation-derived or synthetic. ph must be โค4.0 for aha activity.
SKIN COMPATIBILITY
Irritancy Rating: 2/5 โ low to moderate
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Photosensitizing โ mandatory spf use. start at low frequency.
Safe for Sensitive Skin: Use with caution โ spf required
SAFETY & COMPATIBILITY
Safety Profile: Safe at otc concentrations. eu: โค10% leave-on at ph โฅ3.5. mandatory spf advisory.
Works Well With: Niacinamide,ceramides,hyaluronic acid,spf
Avoid Combining With: Retinol in same step; multiple exfoliants simultaneously
SCIENTIFIC NOTE
Glycolic acid is the most clinically studied aha; mandelic and lactic are preferred for sensitive or darker skin types from their larger molecular weight and slower penetration kinetics.
Last Verified: Cosing database,aha aha exfoliant review
Primary Sources: 2026-03-12
Aha
Common Name(s): Aha,alpha-hydroxy acid exfoliant,keratolytic active
CAS Number: N/a
DESCRIPTION
What It Does: Exfoliates dead skin cells by disrupting desmosomal adhesion bonds, brightens skin tone, stimulates collagen production, and improves product active penetration through the exfoliated sc.
Why It's Used: Aha exfoliation is the most evidence-backed chemical exfoliation mechanism with 30+ years of clinical use data; different acid sizes allow formulators to select penetration depth and intensity for specific skin types.
How It Works: Aha carboxylic groups donate hโบ disrupting caยฒโบ coordination of desmoglein desmosomal proteins at formulation ph 3โ4, weakening corneocyte cohesion. smaller ahas (glycolic, mw 76) penetrate fastest; larger (mandelic, mw 152) penetrate slower for gentler exfoliation.
Typically Found In: Exfoliating toners,aha serums,anti-aging
TECHNICAL DETAILS
Primary Category: Active ingredient โ alpha hydroxy acid (aha)
Secondary Functions: Brightening,collagen stimulation
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ15%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Fermentation-derived or synthetic. ph must be โค4.0 for aha activity.
SKIN COMPATIBILITY
Irritancy Rating: 2/5 โ low to moderate
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Photosensitizing โ mandatory spf use. start at low frequency.
Safe for Sensitive Skin: Use with caution โ spf required
SAFETY & COMPATIBILITY
Safety Profile: Safe at otc concentrations. eu: โค10% leave-on at ph โฅ3.5. mandatory spf advisory.
Works Well With: Niacinamide,ceramides,hyaluronic acid,spf
Avoid Combining With: Retinol in same step; multiple exfoliants simultaneously
SCIENTIFIC NOTE
Glycolic acid is the most clinically studied aha; mandelic and lactic are preferred for sensitive or darker skin types from their larger molecular weight and slower penetration kinetics.
Last Verified: Cosing database,aha aha exfoliant review
Primary Sources: 2026-03-12
Betaine
Common Name(s): Trimethylglycine,tmg,natural betaine
CAS Number: 107-43-7
DESCRIPTION
What It Does: Provides osmoprotective humectant conditioning with anti-irritant and mild foam-boosting activity.
Why It's Used: Natural-origin multifunctional osmolyte from sugar beet providing hydration, anti-irritancy, and conditioning in virtually every cosmetic category.
How It Works: Quaternary ammonium betaine provides zwitterionic character for water binding via ionic hydration. osmoprotective function at 100โ500mm as compatible solute protecting cells from osmotic stress. reduces surfactant irritation by competing with sls for protein binding sites. mild foam enhancement.
Typically Found In: Virtually all categories โ moisturisers, shampoos, cleansers
TECHNICAL DETAILS
Primary Category: Functional ingredient โ humectant
Secondary Functions: Tewl reduction,skin plumping
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: Yes โ from beta vulgaris (sugar beet) molasses
Halal Status: Yes
Source Notes: Synthetic or naturally derived. excellent aqueous solubility.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; suitable for all skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Betaine's anti-irritant mechanism for surfactant systems involves competitive protein protection: betaine at high concentrations preferentially interacts with skin proteins, occupying binding sites that would otherwise be occupied by surfactant molecules causing protein denaturation. this competition reduces available protein binding for irritating surfactants, explaining betaine's well-documented ability to reduce sls irritation when co-formulated.
Last Verified: Cosing database,craig betaine osmoprotective review,cir safety assessment
Primary Sources: 2026-03-12
Betaine
Common Name(s): Trimethylglycine,tmg,natural betaine
CAS Number: 107-43-7
DESCRIPTION
What It Does: Provides osmoprotective humectant conditioning with anti-irritant and mild foam-boosting activity.
Why It's Used: Natural-origin multifunctional osmolyte from sugar beet providing hydration, anti-irritancy, and conditioning in virtually every cosmetic category.
How It Works: Quaternary ammonium betaine provides zwitterionic character for water binding via ionic hydration. osmoprotective function at 100โ500mm as compatible solute protecting cells from osmotic stress. reduces surfactant irritation by competing with sls for protein binding sites. mild foam enhancement.
Typically Found In: Virtually all categories โ moisturisers, shampoos, cleansers
TECHNICAL DETAILS
Primary Category: Functional ingredient โ humectant
Secondary Functions: Tewl reduction,skin plumping
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: Yes โ from beta vulgaris (sugar beet) molasses
Halal Status: Yes
Source Notes: Synthetic or naturally derived. excellent aqueous solubility.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Non-irritating; suitable for all skin types.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Excellent safety profile. ewg score: 1.
Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Betaine's anti-irritant mechanism for surfactant systems involves competitive protein protection: betaine at high concentrations preferentially interacts with skin proteins, occupying binding sites that would otherwise be occupied by surfactant molecules causing protein denaturation. this competition reduces available protein binding for irritating surfactants, explaining betaine's well-documented ability to reduce sls irritation when co-formulated.
Last Verified: Cosing database,craig betaine osmoprotective review,cir safety assessment
Primary Sources: 2026-03-12
Personalized Usage Instructions
How to Use
Step 1
Squeeze the required amount of scrub on your finger tip
Step 2
Apply on damp scalp and scrub in gentle circular strokes
Step 3
Wash off thoroughly with water
Medical Chemicals
Protein/Moisture
- Moisture
pH Level
- Acidic
Porosity Taget
- Normal Porosity
Customized for Your Profile
Scalp Condtions
Anti-Dandruff, Oil Control, Dry Scalp, pH Balanced
Climate Suitability
Humid, Dry, UV Protection, Pollution Shield, Summer, Winter
Clinical Claims
Frequency
Squeeze the required amount of scrub on your finger tip. Apply on damp scalp and scrub in gentle circular strokes. Wash off thoroughly with water.
Product Information
100% Authentic
Clinically Tested (by brand claim)