
Hoyu
Hoyu Cielo Hair Color Milky
An easy-to-use hair dye with a gentle floral fragrance that provides beautiful color payoff, moisturizing finish, and natural luster. Available in 16 shades ranging from mocha and caramel to maple and ash.
Color-safe
Color Fading
Color-treated
As Needed
Color Products
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:
Very healthy or severely damaged hair falls outside optimal treatment parameters
Water Quality:
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 dye with moisturizing ingredients
Who Is It For
Adults
Budget
$7.44 - $14.88
Timeline
Immediate
Why Youโll Love It
What Does It Help With?
Coloring hair, covering gray hair
Best for
Color Fading
Features
Easy application, gentle floral scent, moisturizing finish, natural luster
Checks
Ingredients Overview
Ingredients List
5-amino-ortho-cresol, toluene-2,5-diamine, alpha-naphthol, para-aminophenol, para-phenylenediamine, meta-aminophenol, resorcinol, HEDTA-3Na-dihydrate, PEG-8, POE-oleyl-ether, POE-stearyl-ether, POE-cetyl-ether, POE-2-lauryl-ether, POE-21-lauryl-ether, ascorbic-acid, isopropanol, octyldodecanol, seaweed-extract-1, strong-ammonia-water, highly-polymerized-dimethicone-1, water-soluble-collagen-solution-3, stearyl-alcohol, cetanol, taurine, camellia-oil, theanine, paraben, hydroxyethylcellulose, sunflower-oil-1, behentrimonium-chloride, polydimethyldimethylenepyrrolidinium-chloride-solution, anhydrous-sodium-sulfite, monoethanolamine, vaseline, yellow-203, fragrance, hydrogen-peroxide-solution, POE-20-POP-4-cetyl-ether, POE-cetyl-ether, lipophilic-glyceryl-stearate, sodium-stearoyl-methyl-taurine, hydroxyethanediphosphonic-acid-4Na-solution, hydroxyethanediphosphonic-acid-solution, phenoxyethanol, behenyl-alcohol, liquid-paraffin
Key Ingredients
Shea-butter, jojoba-oil, olive-oil
Ingredients Details
Fragrance
Common Name(s): Fragrance ingredient,eu allergen or aromatic component,olfactory/flavour
CAS Number: N/a
DESCRIPTION
What It Does: Provides the complete fragrance profile contributing to product sensory experience and consumer appeal.
Why It's Used: Fragrance is a major consumer purchase driver โ up to 70% of consumers make purchasing decisions partially based on product scent.
How It Works: Fragrance blends interact with olfactory receptors providing the sensory profile โ complex mixtures activate multiple receptor types for rich, multidimensional scent experiences.
Typically Found In: All fragrance products
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: Standard use levels
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
Ifra guidelines set usage limits for fragrance ingredients based on skin sensitisation and phototoxicity assessment for each application category.
Last Verified: Eu regulation 1223/2009 annex iii,ifra standards,fragrance allergen declaration requirements
Primary Sources: 2026-03-12
Hydroxyethylcellulose
Common Name(s): Hec,natrosol,ethylhydroxyethylcellulose
CAS Number: 9004-62-0
DESCRIPTION
What It Does: Provides non-ionic thickening compatible with anionic surfactants and electrolyte-containing formulations.
Why It's Used: Non-ionic cellulose thickener for surfactant systems where anionic/cationic thickener incompatibility is a concern.
How It Works: Hydroxyethyl substitution disrupts cellulose crystallinity enabling water solubility. non-ionic nature provides compatibility with anionic, cationic, and amphoteric surfactants. pseudoplastic rheology provides shear-thinning for dispensing. film formation from cellulose backbone.
Typically Found In: Shampoos,body washes,clear gels,surfactant systems
TECHNICAL DETAILS
Primary Category: Functional ingredient โ cellulose thickener
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: 0.1%โ3%
SOURCING & ETHICS
Vegan Status: Yes โ from cellulose (plant)
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
Hydroxyethylcellulose's non-ionic character is its primary differentiator from anionic carboxymethylcellulose โ the absence of ionizable groups means hec maintains stable viscosity across ph 2-12 and at high electrolyte concentrations where carboxymethylcellulose destabilizes. this ionic independence makes hec the preferred cellulose thickener for acidic and salt-containing formulations.
Last Verified: Cosing database,ashland hec technical data,cir safety assessment
Primary Sources: 2026-03-12
Octyldodecanol
Common Name(s): 2-octyldodecanol,eutanol g,c20 branched alcohol
CAS Number: 5333-42-6
DESCRIPTION
What It Does: Provides elegant dry-touch emolliency with excellent solubilisation for active ingredients.
Why It's Used: Premium emollient solvent โ octyldodecanol's branched c20 structure provides a uniquely dry, elegant emollient character with exceptional compatibility for challenging actives.
How It Works: Branched c20 fatty alcohol provides dry, non-greasy emolliency. excellent solvent for fat-soluble vitamins, retinoids, uv filters, and flavour compounds. lower viscosity than longer-chain fatty alcohols for elegant application. very good spreading coefficient for uniform application.
Typically Found In: Premium skincare,sunscreens,vitamin delivery systems
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%โ20%
SOURCING & ETHICS
Vegan Status: Yes โ from c10 alcohols via guerbet reaction (plant-derived)
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
Octyldodecanol is produced via the guerbet reaction โ a base-catalysed self-condensation of two c10 alcohol molecules (decanol) yielding the branched c20 2-octyldodecanol. this reaction produces a highly branched structure that prevents crystallisation (liquid at room temperature), providing liquid-state emolliency with a completely different tactile profile than the waxy feel of linear c20 fatty alcohols.
Last Verified: Cosing database,cir safety assessment
Primary Sources: 2026-03-12
Peg-8
Common Name(s): Peg-8,cosmetic active,functional ingredient
CAS Number: N/a
DESCRIPTION
What It Does: Delivers characteristic cosmetic function at recommended use concentration.
Why It's Used: Selected for functional contribution and formulation compatibility supported by cosmetic science and regulatory safety data.
How It Works: Works through the mechanism of its molecular class โ physicochemical or biological interaction with skin proteins, lipids, or receptors as documented in peer-reviewed cosmetic 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
Peg-8 has an established safety and efficacy profile within the cosmetic regulatory framework at standard use concentrations.
Last Verified: Cosing database,peg-8 technical literature
Primary Sources: 2026-03-12
Personalized Usage Instructions
How to Use
Step 1
1
Step 2
Add the entire amount of Agent 1 to Agent 2, close the white cap, and shake up and down to mix well
Step 3
2
Step 4
Use the comb part to apply the mixed emulsion evenly to dry hair as if combing it, and leave it for about 15 minutes
Step 5
3
Step 1
Rinse thoroughly and finish with shampoo and conditioner
Medical Chemicals
Protein/Moisture
- Moisture
pH Level
- Acidic
Porosity Taget
- Normal Porosity
Customized for Your Profile
Scalp Condtions
pH Balanced
Climate Suitability
All Climates
Clinical Claims
Frequency
1. Add the entire amount of Agent 1 to Agent 2, close the white cap, and shake up and down to mix well. 2. Use the comb part to apply the mixed emulsion evenly to dry hair as if combing it, and leave it for about 15 minutes. 3. Rinse thoroughly and finish with shampoo and conditioner.