
Highlights
WHAT IS IT?
Cleansing milk
FEATURES
Soothes and hydrates skin, strengthens skin barrier, protects from pollutants and free radicals
BEST FOR
Sensitive, dry, and irritated skin
CHECKS
Clean beauty, free of synthetic fragrances or colors, silicones, sulfates, PEGs, parabens, urea, TEA/DEA
Who Is It For?
Adults Both Women And MenWhat Does It Help With?
Dryness Sensitivity IrritationBudget
Mid-rangeHow To Use
Which routine should it be used in?
Instructions:
Key Information
What REN Clean Skincare Says
Product Description:
Gently remove daily dirt, excess oil and impurities with a non-drying cleansing milk that's proven to soothe and hydrate skin after the very first use. Formulated for sensitive, dry and irritated skin, this ultra-gentle cleanser is infused with nourishing Blackcurrant and Sea Buckthorn Oils to lock in moisture and help strengthen your skin barrier, and antioxidant Fennel Seed Extract to help to protect skin from everyday pollutants and free radicals.
About the Brand:
Ingredients Overview
Ingredients List
Aqua (Water), Cetearyl Ethylhexanoate, Cetearyl Alcohol, Caprylic/ Capric Triglyceride, Sesamum Indicum (Sesame) Seed Oil, Butyrospermum Parkii (Shea) Butter, Myristyl Myristate, Glycerin, Cetearyl Glucoside, Ribes Nigrum (Black Currant) Seed Oil, Helianthus Annuus (Sunflower) Seed Oil, Sodium Stearoyl Glutamate, Oryzanol, Bisabolol, Myristyl Laurate, Hippophae Rhamnoides Fruit Extract, Calendula Officinalis Flower Extract, Tocopherol, Xanthan Gum, Phenoxyethanol, Citrus Nobilis (Mandarin Orange) Peel Oil, Anthemis Nobilis (Chamomile) Flower Oil, Sodium Dehydroacetate, Cinnamomum Camphora Linalloliferum (Ho Wood) Leaf Oil, Pelargonium Graveolens Flower Oil, Foeniculum Vulgare (Fennel) Fruit Extract, Ethylhexylglycerin, Glucose, Parfum (Fragrance), Rosmarinus Officinalis (Rosemary) Leaf Extract, Citric Acid, Citronellol, Limonene, Linalool 100% Natural Fragrance - Parfum 100% Naturel
Key Ingredients
Blackcurrant Seed Oil, Sea Buckthorn Oil, Fennel Seed Extract
Ingredients Details
Butyrospermum Parkii Shea Butter
Common Name(s): Butyrospermum parkii shea butter
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 — enzymes, receptors, structural proteins, or signaling molecules — 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: 0.01–5%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Specialty active ingredient; check individual sourcing for vegan status.
SKIN COMPATIBILITY
Irritancy Rating: 1899-12-31 00:00:00 -0800
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-γ 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
Cetearyl Alcohol
Common Name(s): Cetostearyl alcohol,c16-18 fatty alcohol
CAS Number: 8005-44-5
DESCRIPTION
What It Does: Provides fatty alcohol emulsification and thickening for stable, well-textured emulsions.
Why It's Used: The most widely used fatty alcohol in cosmetics – provides emulsification, thickening, and emolliency simultaneously from a single ingredient with excellent safety profile.
How It Works: Forms bilayer lamellar structures in water with emulsifiers creating a viscous structured network that thickens and stabilizes emulsions. fatty alcohol emolliency provides direct skin conditioning. bilayer formation reduces inter-droplet coalescence in emulsions.
Typically Found In: Creams,lotions,conditioners – virtually all emulsion products
TECHNICAL DETAILS
Primary Category: Functional ingredient – fatty alcohol emulsifier/thickener
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%–25%
SOURCING & ETHICS
Vegan Status: Yes – from vegetable or coconut/palm fatty acids
Halal Status: Yes
Source Notes: Plant-derived, synthetic or animal-derived. verify source.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 – very low
Comedogenicity Rating: 1/5 – 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
Cetearyl alcohol's ability to form lamellar liquid crystal structures ('krafft phases') with water and co-emulsifiers provides not only emulsion stability but also enhanced skin penetration via the lamellar skin barrier pathway. these crystalline structures can act as a reservoir for active ingredients, slowly releasing them as the lamellar structure melts on skin contact.
Last Verified: Cosing database,cir safety assessment
Primary Sources: 2026-03-12
Cetearyl Ethylhexanoate
Common Name(s): Cetearyl ethylhexanoate,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 — 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 – 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%–10%
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 – very low
Comedogenicity Rating: 0/5 – 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: 1–2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Cetearyl ethylhexanoate has an established safety and efficacy profile within the cosmetic regulatory framework at standard use concentrations.
Last Verified: Cosing database,cetearyl ethylhexanoate technical literature
Primary Sources: 2026-03-12
Cetearyl Glucoside
Common Name(s): Nonionic emulsifier,o/w surfactant,emulsion stabiliser
CAS Number: N/a
DESCRIPTION
What It Does: Stabilises o/w emulsions by forming a molecular monolayer at the oil-water interface, provides co-emulsification synergy with other emulsifiers, and contributes to emulsion texture through interfacial film properties.
Why It's Used: Nonionic emulsifiers are preferred for sensitive skin and ph-extreme formulations — no ionic charge means no electrostatic interaction with skin proteins, no ph-dependent function loss, and compatibility with both anionic and cationic co-ingredients.
How It Works: Hlb determines emulsion type: hlb 8–12 for o/w emulsification; hlb 3–6 for w/o. the peg or glycoside head group provides hydrophilicity while the c16–c18 fatty chain provides lipophilicity. at the o/w interface, nonionic emulsifiers form a mixed monolayer reducing interfacial tension from ~35 mn/m (clean oil-water) to 5–10 mn/m, providing thermodynamic stabilisation.
Typically Found In: Creams,lotions,o/w emulsions
TECHNICAL DETAILS
Primary Category: Active ingredient – 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: 1%–10%
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 – very low
Comedogenicity Rating: 0/5 – 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: 1–2.
Works Well With: Standard skincare actives
Avoid Combining With: No known significant incompatibilities
SCIENTIFIC NOTE
Mixed emulsifier systems (e.g., glyceryl stearate + peg-100 stearate, or cetearyl glucoside + cetearyl alcohol) provide better emulsion stability than single emulsifiers — synergistic packing of different molecular geometries creates a more cohesive, mechanically robust interfacial film.
Last Verified: Cosing database,nonionic emulsifier hlb system review
Primary Sources: 2026-03-12