
Highlights
WHAT IS IT?
Vitamin A retinol serum
FEATURES
Time Release technology, Three progressive strengths, Retinol booster with climbazole, Nourishing squalane
BEST FOR
sensitive
CHECKS
FRAGRANCE-FREE, NO SYNTHETIC COLORS, PARABEN FREE, ALCOHOL FREE
Who Is It For?
Adults Seeking Anti-aging BenefitsWhat Does It Help With?
Anti-aging Smoothing Brightening Fine Lines & WrinklesBudget
Mid-range ($30-$75)How To Use
Which routine should it be used in?
Instructions:
Key Information
What Medik8 Says
Product Description:
Discover visibly youthful, smooth and bright skin with Intelligent Retinol. This performance-enhanced vitamin A serum is expertly infused with climbazole (a proven retinol booster), for maximum visible age-defying results. Add to that nourishing squalane, Medik8's unique Time Release technology, and a choice of 3 progressive strengths for youth-boosting power that remains gentle on all skin types.
About the Brand:
Ingredients Overview
Ingredients List
Squalane, Caprylic/Capric Triglyceride, Carthamus Tinctorius (Safflower) Seed Oil, Dimethicone, PPG-12/SMDI Copolymer, Tocopheryl Acetate, Retinol, Climbazole, Pogostemon Cablin Leaf Oil, Decylene Glycol, Phenoxyethanol, 1,2-Hexanediol, BHT, Lecithin
Key Ingredients
retinol, climbazole, squalane
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 – 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%–50%
SOURCING & ETHICS
Vegan Status: Yes – 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 – very low
Comedogenicity Rating: 1/5 – 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
Carthamus Tinctorius Safflower Seed Oil
Common Name(s): Carthamus tinctorius safflower seed oil oil
DESCRIPTION
What It Does: Nourishes and softens skin through its balanced fatty acid profile, while antioxidant compounds protect against oxidative skin damage.
Why It's Used: Plant oils provide physiologically compatible lipid structures that integrate into the skin barrier and deliver fat-soluble antioxidants directly to skin cells.
How It Works: Fatty acids integrate into stratum corneum lipid lamellae, reinforcing the lipid barrier. antioxidants (tocopherols, carotenoids, polyphenols) neutralize ros through electron donation or singlet oxygen quenching.
Typically Found In: Face oils,serums,moisturizers,hair treatments,body oils
TECHNICAL DETAILS
Primary Category: Plant oils
Secondary Functions: Emollient,antioxidant
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5–30%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Cold-pressed or solvent-extracted plant oil; no animal components.
SKIN COMPATIBILITY
Irritancy Rating: 1899-12-31 00:00:00 -0800
Comedogenicity Rating: 1900-01-01 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: Vitamin e,ceramides,other plant oils,squalane
Avoid Combining With: Strong oxidizers (accelerate rancidity)
SCIENTIFIC NOTE
Vegetable oils are triglyceride matrices where the fatty acid composition determines skin compatibility, barrier function, and comedogenicity. oleic acid-rich oils (>60%) soften barrier lipids and enhance penetration; linoleic acid-rich oils reinforce ceramide-poor stratum corneum; saturated fatty acid-rich oils provide occlusion without skin penetration.
Last Verified: Cosing eu database; pcpc cosmetic ingredient safety reviews; aocs plant oil composition databases; fatty acid pharmacology reviews
Primary Sources: 2025-01-15
Climbazole
Common Name(s): Bayhibit am,1-(4-chlorophenoxy)-1-imidazol-1-yl-3,3-dimethylbutan-2-one
CAS Number: 38083-17-9
DESCRIPTION
What It Does: Provides imidazole-class antifungal activity specifically targeting malassezia for dandruff control in leave-on scalp products.
Why It's Used: Leave-on compatible anti-dandruff active – unlike zpt (limited in leave-on face products), climbazole is approved for leave-on scalp and face formulations for continuous anti-dandruff and anti-seborrheic activity.
How It Works: Imidazole ring inhibits malassezia cytochrome p450-dependent 14-alpha-lanosterol demethylase, blocking ergosterol synthesis essential for fungal cell membrane integrity. highly selective for fungal vs mammalian p450 enzymes.
Typically Found In: Leave-on scalp treatments,anti-dandruff serums,seborrheic dermatitis products
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: 0.5%–2%
SOURCING & ETHICS
Vegan Status: Yes – synthetic
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
Climbazole's imidazole mechanism (ergosterol synthesis inhibition via p450 enzyme blockade) is identical to the pharmaceutical anti-fungal ketoconazole's mechanism, but climbazole has superior safety profile for cosmetic use and explicit eu approval for leave-on scalp products where ketoconazole requires prescription status.
Last Verified: Cosing database,billhimer & luitpold climbazole anti-dandruff study
Primary Sources: 2026-03-12
Decylene Glycol
Common Name(s): Decylene glycol,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
Decylene glycol has an established safety and efficacy profile within the cosmetic regulatory framework at standard use concentrations.
Last Verified: Cosing database,decylene glycol technical literature
Primary Sources: 2026-03-12