Intelligent Retinol Eye TR™

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

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

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

DESCRIPTION

What It Does: Provides volatile silicone delivery with longer contact time than d5 for extended active delivery.

Why It's Used: Longer-evaporation volatile silicone for formulations requiring extended delivery contact time vs d5's rapid evaporation.

How It Works: Larger ring (6 silicone units) provides lower vapor pressure than d5 (5 units). slower evaporation rate (2-3× longer than d5) provides extended delivery window. same dry-touch after complete evaporation.

Typically Found In: Longer-duration volatile vehicles,serum formulations

TECHNICAL DETAILS

Primary Category: Functional ingredient – volatile cyclic silicone

Secondary Functions: Skin conditioning

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 1%–30%

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: Eu restrictions on d5 do not apply to d6 – d6 may be used in rinse-off products without restriction.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

The different evaporation rates of d4 (methylcyclosiloxane), d5, and d6 provide formulators with a toolkit of volatile silicone delivery windows: d4 evaporates in ~1 minute, d5 in ~5 minutes, d6 in ~15 minutes. blending these provides precisely tunable evaporation kinetics for specific delivery timing requirements.

Last Verified: Cosing database,dow silicone technical data,cir safety assessment

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides a dry, weightless application vehicle that evaporates cleanly leaving actives and non-volatile silicones deposited on skin — eliminating the residual heaviness of conventional liquid carrier solvents.

Why It's Used: Cyclosiloxanes are the unique volatile silicone solvents that dissolve non-volatile silicones (dimethicone, cyclomethicone), organic uv filters, and lipophilic actives, providing the sensory-superior dry-touch application experience in premium formulations.

How It Works: Cyclosiloxane vapour pressure (d5 cyclopentasiloxane ~0.3 mmhg at 25°c) provides clean evaporation at body temperature. the cyclic ring structure provides lower boiling point than equivalent linear dimethicone, enabling faster evaporation while the ring conformation maintains the silicone's low surface energy for smooth application.

Typically Found In: Primers,antiperspirants,sunscreens

TECHNICAL DETAILS

Primary Category: Functional ingredient – 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%–50%

SOURCING & ETHICS

Vegan Status: Yes

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

Cyclopentasiloxane (d5) and cyclohexasiloxane (d6) are under eu regulatory review for potential environmental persistence (pbt assessment) — formulators should monitor eu regulation 2018/35 implementation for restrictions in wash-off products.

Last Verified: Cosing database,eu cyclosiloxane regulatory review

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides natural phospholipid emulsification with barrier-compatible delivery and liposome-forming properties.

Why It's Used: The most biologically authentic emulsifier – identical to cell membrane composition providing barrier-compatible delivery and liposome formation unavailable from synthetic emulsifiers.

How It Works: Phosphatidylcholine (pc), phosphatidylethanolamine (pe), phosphatidylinositol (pi) mixture provides hlb 7-12 for o/w emulsification. forms liposomal bilayers for active encapsulation. pc/pe/pi composition mirrors cell membrane for barrier-compatible delivery.

Typically Found In: Natural cosmetics,liposomal products,barrier repair,penetration-enhanced formulas

TECHNICAL DETAILS

Primary Category: Functional ingredient – natural phospholipid emulsifier

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%–10%

SOURCING & ETHICS

Vegan Status: Conditional – soy lecithin (vegan); egg lecithin (not vegan)

Halal Status: Conditional – soy (halal); egg (verify)

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

Lecithin's phospholipid composition mirrors the composition of the stratum corneum's own lamellar bodies that deliver barrier lipids to the skin surface. this structural mimicry allows lecithin-based delivery systems to integrate seamlessly with the barrier lipid structure, exploiting the same transport pathway the skin uses for its own lipid secretion.

Last Verified: Cosing database,cir safety assessment

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Prevents microbial contamination and spoilage in cosmetic formulations.

Why It's Used: The benchmark cosmetic preservative – eu-permitted up to 1%, effective against virtually all cosmetically relevant microorganisms, and excellent tolerability.

How It Works: Phenol ring provides broad antimicrobial activity via disruption of bacterial and fungal cell membranes and inhibition of enzymatic activity. effective against gram-positive and gram-negative bacteria, yeasts (candida), and molds (aspergillus). activity ph range: 3-9.

Typically Found In: All cosmetic formulations as primary preservative

TECHNICAL DETAILS

Primary Category: Functional ingredient – broad-spectrum preservative

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%–1% (eu max 1%)

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: Eu cosmetics regulation max 1%. sccs assessed as safe at ≤1%. avoid use around eyes in baby products per some country regulations. ewg score: 4.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Phenoxyethanol's widespread adoption as the primary cosmetic preservative followed the phaseout of parabens from many formulations in the 2000s-2010s. despite having a comparable or better safety profile to parabens, it is often cited in 'free-from' formulations – a consumer perception issue rather than a scientific safety concern.

Last Verified: Cosing database,sccs opinion on phenoxyethanol,cir safety assessment

Primary Sources: 2026-03-12

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: 1

Comedogenicity Rating: 0

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

DESCRIPTION

What It Does: Retinol accelerates skin cell turnover, stimulates collagen production, reduces fine lines and wrinkles, fades hyperpigmentation, and helps normalize pore size.

Why It's Used: It is the most evidence-backed anti-aging ingredient available without a prescription. it provides comprehensive skin renewal benefits that no other single cosmetic ingredient can match.

How It Works: Retinol is converted in the skin to retinoic acid, which binds to retinoid receptors in cell nuclei. this activates gene expression changes that accelerate cell turnover, boost collagen synthesis, and inhibit matrix metalloproteinases (collagen-degrading enzymes).

Typically Found In: Night creams,serums,eye creams,targeted treatment products,anti-aging formulations

TECHNICAL DETAILS

Primary Category: Active ingredient – vitamin a derivative

Secondary Functions: Exfoliating,anti-acne,brightening

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.025%–1% (otc); start at low concentrations and build up slowly

SOURCING & ETHICS

Vegan Status: Conditional – can be animal-derived (fish liver, egg yolk) or synthetic; verify source

Halal Status: Conditional – verify source; synthetic retinol is halal

Source Notes: Cosmetic retinol is predominantly synthetically manufactured. some natural sources include fish liver oils. synthetic is preferred for purity and sustainability.

SKIN COMPATIBILITY

Irritancy Rating: 3/5 – moderate; can cause dryness, peeling, redness, especially during adjustment period (retinization)

Comedogenicity Rating: 0/5 – non-comedogenic; actually helps clear pores

Sensitivity Concerns: Retinization period: 2–6 weeks of potential dryness, flaking, and sensitivity. photosensitizing – must use spf when using retinol. avoid during pregnancy.

Safe for Sensitive Skin: Use with caution – start at 0.025%, buffer with moisturizer, use every 2–3 nights initially

SAFETY & COMPATIBILITY

Safety Profile: Safe for general use at otc concentrations. not recommended during pregnancy. avoid with waxing. use spf daily. ewg hazard score: varies by concentration.

Works Well With: Niacinamide (soothes irritation),peptides,ceramides,hyaluronic acid,spf (mandatory)

Avoid Combining With: Benzoyl peroxide (may inactivate retinol),ahas/bhas (when new to retinol – overexfoliation risk),vitamin c (use at different times)

SCIENTIFIC NOTE

Retinol is approximately 20 times less potent than prescription tretinoin (retinoic acid) but significantly better tolerated. the conversion rate of retinol to retinoic acid in skin is the rate-limiting step in its efficacy.

Last Verified: Cosing database,cir safety assessment,journal of investigative dermatology,kligman et al. studies

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides stable vitamin e delivery with antioxidant activity after esterase hydrolysis in skin.

Why It's Used: The formulation-stable vitamin e — tocopheryl acetate's ester protection prevents oxidative degradation during shelf life while releasing active tocopherol in skin for equivalent biological activity.

How It Works: Acetate ester blocks the phenolic oh group responsible for oxidation and radical scavenging. skin esterases cleave acetate bond releasing free tocopherol. released tocopherol provides lipid peroxyl radical scavenging in cell membranes. also provides direct emollient and skin conditioning.

Typically Found In: Moisturisers,sunscreens,anti-aging products — extremely widespread

TECHNICAL DETAILS

Primary Category: Active ingredient – stable vitamin e ester

Secondary Functions: Free radical scavenging,anti-aging

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.1%–5%

SOURCING & ETHICS

Vegan Status: Conditional – natural from vegetable oils (soy, sunflower); synthetic dl-form

Halal Status: Yes

Source Notes: Plant-derived extract or synthetic.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Non-irritating; well-tolerated.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: The d-alpha-tocopheryl acetate (natural isomer) is biologically superior to dl-alpha-tocopheryl acetate (racemic synthetic) for skin antioxidant activity. ingredient label d- vs dl- prefix identifies natural vs synthetic origin.

Works Well With: Vitamin c,vitamin e,ferulic acid,spf,other antioxidants

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Tocopheryl acetate's conversion to active tocopherol in skin is quantitatively efficient: skin esterase activity is sufficient to cleave 60-80% of applied tocopheryl acetate within 24 hours of application. however, the conversion rate varies with skin condition (eczematous or barrier-compromised skin has reduced esterase activity), meaning tocopheryl acetate efficacy may be reduced precisely in the skin conditions that most need antioxidant support.

Last Verified: Cosing database,cir safety assessment

Primary Sources: 2026-03-12