
Highlights
WHAT IS IT?
Retinol renewal serum with dual retinoids
FEATURES
Reduces fine lines and wrinkles, Renews skin appearance, Gentle formula
BEST FOR
normal
CHECKS
Gluten-free, fragrance-free
Who Is It For?
Adults Concerned With Aging SignsWhat Does It Help With?
Fine Lines Wrinkles Skin RenewalBudget
Mid-range ($30-$75)How To Use
Which routine should it be used in?
Instructions:
Key Information
What Summer Fridays Says
Product Description:
With two forms of retinoids, paired with soothing ingredients, this gentle night serum helps reduce the appearance of fine lines and wrinkles and renew skin's appearance.
About the Brand:
Ingredients Overview
Ingredients List
Water/Aqua/Eau, Glycerin, Squalane, Caprylic/Capric Triglyceride, Cetearyl Alcohol, Glyceryl Stearate SE, Simmondsia Chinensis (Jojoba) Seed Oil, Propanediol, Sorbitan Stearate, Sclerotium Gum, Retinyl Linoleate, Retinol, Avena Sativa (Oat) Bran Extract, Centella Asiatica Extract, Niacinamide, Bisabolol, Rosa Canina Fruit Oil, Persea Gratissima (Avocado) Oil, Prunus Amygdalus Dulcis (Sweet Almond) Oil, Butyrospermum Parkii (Shea) Butter, Sodium Hyaluronate, Ricinus Communis (Castor) Seed Oil, Hydrogenated Castor Oil, Glycine Soja (Soybean) Oil, Tocopherol, Tocopheryl Acetate, Phytic Acid, Synthetic Beeswax, Copernicia Cerifera (Carnauba) Wax/Copernicia Cerifera Cera/Cire de carnauba, Maltodextrin, Caprylhydroxamic Acid, 1,2-Hexanediol, Sodium Benzoate, Potassium Sorbate, Levulinic Acid, Sodium Levulinate, Citric Acid, Sodium Hydroxide
Key Ingredients
retinoids,hyaluronic acid,niacinamide,tiger grass
Ingredients Details
Caprylic/capric Triglyceride
Common Name(s): Mct oil,fractionated coconut oil,c8/c10 triglyceride
CAS Number: 73398-61-5
DESCRIPTION
What It Does: Lightweight, stable emollient that solubilizes oil-soluble actives for excellent delivery without greasy feel.
Why It's Used: Universal lightweight emollient base and solubilizer for oil-soluble actives in serums and low-viscosity formulations where mineral oil or petrolatum would be too heavy.
How It Works: Medium-chain length provides ideal balance of spreading coefficient, penetration rate, and barrier-sealing properties. excellent solubilizer for vitamin e, retinoids, and other lipophilic actives.
Typically Found In: Serums,facial oils,sunscreens,anti-aging products,hair products
TECHNICAL DETAILS
Primary Category: Active ingredient โ medium-chain triglyceride emollient
Secondary Functions: Active solubilizer,spreading agent
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ50%
SOURCING & ETHICS
Vegan Status: Yes โ from coconut/palm kernel oil
Halal Status: Yes
Source Notes: Fractionated by hydrolysis and re-esterification of coconut oil. only c8 and c10 fatty acids retained.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ very low; medium-chain length generally 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
Mct oil's medium-chain length (c8/c10) provides superior oxidative stability vs longer polyunsaturated chains and better skin aesthetics (lighter, less greasy) vs longer chain emollients (c16/c18). excellent solubilizer for retinoic acid, tocopheryl esters, and other lipophilic actives.
Last Verified: Cosing database,cir safety assessment,ewg skin deep
Primary Sources: 2026-03-12
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 โ 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 โ virtually all emulsion products
TECHNICAL DETAILS
Primary Category: Functional ingredient โ 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%โ25%
SOURCING & ETHICS
Vegan Status: Yes โ 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 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
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
Glycerin
Common Name(s): Glycerol,glycerine,1,2,3-propanetriol
CAS Number: 56-81-5
DESCRIPTION
What It Does: Glycerin pulls water from the environment and deeper skin layers into the outer skin layer (epidermis), boosting moisture levels and keeping skin soft, smooth, and plump.
Why It's Used: It is used in virtually every moisturizer, serum, and cleanser because it is highly effective at hydrating skin, is well-tolerated by all skin types, and enhances the texture and spreadability of formulations.
How It Works: As a humectant, glycerin forms hydrogen bonds with water molecules, trapping them in the skin. it also reinforces the skin barrier by integrating into lipid structures between skin cells.
Typically Found In: Moisturizers,serums,cleansers,toners,sheet masks,sunscreens,body lotions,shampoos,conditioners
TECHNICAL DETAILS
Primary Category: Humectant
Secondary Functions: Skin barrier support,emollient,solvent
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 1%โ30% (typical: 3โ10%)
SOURCING & ETHICS
Vegan Status: Yes โ plant-derived (coconut, soy, palm) or synthetic
Halal Status: Yes โ when plant-derived or synthetic; verify source with supplier
Source Notes: Derived from plant oils via hydrolysis or saponification; synthetic versions also available. palm-derived glycerin carries sustainability concerns.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low; non-irritating at all standard concentrations
Comedogenicity Rating: 0/5 โ non-comedogenic
Sensitivity Concerns: Extremely rare allergic reactions; generally safe for all skin types including sensitive and baby skin
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Widely recognized as safe. ewg hazard score: 1. no significant concerns for irritation, sensitization, or toxicity at typical concentrations (up to 50%).
Works Well With: Hyaluronic acid,ceramides,niacinamide,panthenol,urea,peptides,retinol,ahas/bhas
Avoid Combining With: No known incompatibilities at standard concentrations
SCIENTIFIC NOTE
Glycerin is an endogenous skin component found naturally in the stratum corneum. aquaporin-3 channels in keratinocytes facilitate glycerin transport, making it integral to natural skin hydration pathways.
Last Verified: Cosing database,cir safety assessment,ewg skin deep,inci decoder
Primary Sources: 2026-03-12
Glyceryl Stearate Se
Common Name(s): Glyceryl monostearate se,self-emulsifying glyceryl stearate
DESCRIPTION
What It Does: Provides self-emulsifying o/w emulsification with less co-emulsifier requirement.
Why It's Used: Simplified emulsification for formulations where self-emulsification reduces complexity vs standard gms requiring hlb-matched co-emulsifier blends.
How It Works: Small amount of embedded sodium/potassium stearate soap provides in-situ hlb modification enabling self-emulsification without requiring precisely hlb-matched co-emulsifier. forms stable o/w emulsions with water alone under high-shear mixing.
Typically Found In: Simple cream formulations,single-emulsifier systems
TECHNICAL DETAILS
Primary Category: Functional ingredient โ self-emulsifying monoglyceride
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%โ10%
SOURCING & ETHICS
Vegan Status: Yes โ from vegetable glycerol and stearic acid
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
Glyceryl stearate se's built-in self-emulsification arises from the small percentage (~2-5%) of potassium stearate soap co-crystallized with the monoglyceride. this soap provides the high-hlb co-emulsifier 'partner' needed for stable o/w emulsification without requiring the formulator to select and add a separate high-hlb emulsifier โ an elegant simplification of classic emulsifier hlb matching theory.
Last Verified: Cosing database,cir safety assessment
Primary Sources: 2026-03-12