
YOLU
YOLU - Calm Night Repair Treatment
Nourish your hair with this intensive treatment formulated with hydrating and hair-strengthening ingredients like ceramides, keratin, and botanical extracts. The formula penetrates deep into strands to tackle frizz, dryness, and other hair and scalp concerns. Comes in a floral peony scent.
Sulfate-free
Paraben-free
Color-safe
Silicone-free
Natural
Protein-free
Optimized for Your Environment & Lifestyle
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:
Hair with breakage or thinning needs protein emphasis that moisture-heavy formula lacks
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?
Overnight Treatment, 1 ingredient
Who Is It For
Adults, All Genders
Budget
$33.50 - $67.00
Timeline
Immediate
Why Youโll Love It
What Does It Help With?
Frizz, Dryness, Scalp Issues
Best for
Damage Repair
Features
Hydrating, Strengthening, Frizz Control, Dryness Repair, Scalp Care, Peony Scent
Checks
Sulfate-free, Paraben-free, Silicone-free
Ingredients Overview
Ingredients List
ceramides, keratin, botanical extracts, peony scent
Key Ingredients
ceramides, keratin, botanical extracts
Ingredients Details
Ceramides
Common Name(s): Ceramides,ceramide sphingolipid,sc barrier lipid
CAS Number: N/a
DESCRIPTION
What It Does: Restores sc lamellar lipid bilayers, reduces trans-epidermal water loss, repairs barrier dysfunction in dry and eczematous skin, and strengthens the physical barrier against environmental irritants.
Why It's Used: Provides direct structural barrier lipid replacement โ unlike humectants that attract water, ceramides physically rebuild the lipid bilayer architecture required to retain moisture within the skin.
How It Works: Ceramides integrate into the sc intercellular lamellar bilayer, restoring the ordered orthorhombic packing disrupted in barrier-compromised skin. the sphingosine backbone's amide bond and hydroxyl groups form the h-bonding network that stabilises the lamellar structure.
Typically Found In: Barrier repair,dry skin,eczema-prone
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: 0.01%โ5%
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
Sc ceramides comprise ~50% of the sc lipid mass (by weight) and are essential for barrier function; ceramide depletion in atopic dermatitis and aged skin is a primary driver of barrier dysfunction and tewl elevation.
Last Verified: Cosing database,ceramides ceramide barrier review
Primary Sources: 2026-03-12
Ceramides
Common Name(s): Ceramides,ceramide sphingolipid,sc barrier lipid
CAS Number: N/a
DESCRIPTION
What It Does: Restores sc lamellar lipid bilayers, reduces trans-epidermal water loss, repairs barrier dysfunction in dry and eczematous skin, and strengthens the physical barrier against environmental irritants.
Why It's Used: Provides direct structural barrier lipid replacement โ unlike humectants that attract water, ceramides physically rebuild the lipid bilayer architecture required to retain moisture within the skin.
How It Works: Ceramides integrate into the sc intercellular lamellar bilayer, restoring the ordered orthorhombic packing disrupted in barrier-compromised skin. the sphingosine backbone's amide bond and hydroxyl groups form the h-bonding network that stabilises the lamellar structure.
Typically Found In: Barrier repair,dry skin,eczema-prone
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: 0.01%โ5%
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
Sc ceramides comprise ~50% of the sc lipid mass (by weight) and are essential for barrier function; ceramide depletion in atopic dermatitis and aged skin is a primary driver of barrier dysfunction and tewl elevation.
Last Verified: Cosing database,ceramides ceramide barrier review
Primary Sources: 2026-03-12
Keratin
Common Name(s): Keratin
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: No
Halal Status: Conditional
Source Notes: Contains animal-derived components (keratin...); not suitable for vegan formulations.
SKIN COMPATIBILITY
Irritancy Rating: 1
Comedogenicity Rating: 0
Sensitivity Concerns: Low sensitization potential at recommended use concentrations.
Safe for Sensitive Skin: Conditional
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
Keratin
Common Name(s): Keratin
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: No
Halal Status: Conditional
Source Notes: Contains animal-derived components (keratin...); not suitable for vegan formulations.
SKIN COMPATIBILITY
Irritancy Rating: 1
Comedogenicity Rating: 0
Sensitivity Concerns: Low sensitization potential at recommended use concentrations.
Safe for Sensitive Skin: Conditional
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
Personalized Usage Instructions
How to Use
Step 1
Apply to hair before bedtime, leave overnight, and rinse in the morning
Medical Chemicals
Protein/Moisture
- Moisture
pH Level
- Acidic
Porosity Taget
- Normal Porosity
Customized for Your Profile
Scalp Condtions
Sensitive Scalp, Dry Scalp
Climate Suitability
Dry
Clinical Claims
Frequency
Apply to hair before bedtime, leave overnight, and rinse in the morning.
Product Information
Sulfate-free
Paraben-free
Silicone-free