American Crew Forming Cream

DESCRIPTION

What It Does: Alcohol denat. dissolves oil-soluble and water-soluble cosmetic actives, provides rapid antimicrobial activity at concentrations above 60–70% by denaturing microbial proteins, delivers a refreshing cooling sensation through evaporative cooling on skin, and temporarily enhances the penetration of topical actives by transiently disrupting the stratum corneum lipid bilayer organisation.

Why It's Used: Formulators choose alcohol denat. for its irreplaceable combination of solvent power, antimicrobial activity, and penetration-enhancing properties. no other cosmetic solvent simultaneously provides the cooling sensory experience of alcohol (from evaporative cooling at the skin surface), the immediate antimicrobial activity required for sanitisers (from protein denaturation above 60%), and the transient sc lipid disruption that improves active ingredient delivery (essential in actives-rich toners and essences). for denatured alcohol specifically, denaturing agents (typically 5% isopropanol or bitrex) prevent consumption without affecting cosmetic function.

How It Works: Alcohol denat. works through multiple mechanisms depending on concentration: (1) solvent action — alcohol's hydroxyl group provides hydrogen bonding with water while the short alkyl chain provides interaction with organic solutes, enabling dissolution of both hydrophilic and moderately lipophilic cosmetic actives in a single solvent; (2) antimicrobial — above 60% concentration, ethanol denatures microbial proteins by disrupting non-covalent bonds maintaining protein secondary and tertiary structure — the alcohol molecules intercalate between protein chains, disrupting the hydrophobic interactions and hydrogen bonds that maintain enzyme active site geometry. this non-specific protein denaturation is immediately bactericidal and virucidal with no resistance mechanism possible; (3) sc penetration enhancement — at lower concentrations (5–30%), ethanol transiently fluidises the sc lipid bilayer by intercalating between the ordered lipid lamellae, disrupting the crystal packing and increasing lipid bilayer fluidity. this transient fluidisation increases the diffusion coefficient of co-applied actives through the sc for up to 30 minutes post-application; (4) astringency — alcohol's protein precipitating action at the skin surface contracts superficial proteins, temporarily tightening pores and reducing oiliness.

Typically Found In: Toners,hand sanitisers,actives serums

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: 5%–95%

SOURCING & ETHICS

Vegan Status: Yes

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

Ethanol concentration-dependent antimicrobial efficacy: below 40% — minimal bactericidal effect (insufficient protein denaturation); 40–60% — bacteriostatic, not bactericidal; 60–70% — peak bactericidal efficacy against both enveloped and non-enveloped viruses and vegetative bacteria (optimal water content maintains protein hydration required for denaturation to proceed); 80–90% — remains effective but slightly reduced from decreased water activity; 95–100% — reduced efficacy (insufficient water for protein denaturation). the 70% 'sweet spot' for sanitisers reflects this concentration-efficacy peak, not a formulation convenience.

Last Verified: Cosing database,alcohol denat. ethanol solvent antimicrobial review

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: Provides fixative fragrance and solvent properties with anti-mite activity.

Why It's Used: Natural ester fragrance compound occurring in jasmine and ylang ylang providing fixative and solvent benefits in fragranced cosmetics.

How It Works: Ester of benzyl alcohol and benzoic acid. solvent for difficult-to-dissolve fragrance compounds. penetrates insect/mite cuticle for scabicidal activity. mild skin fixative from ester-protein interactions.

Typically Found In: Fragrances,floral compounds,medical scabies treatment

TECHNICAL DETAILS

Primary Category: Fragrance component / scabicide

Secondary Functions: Skin conditioning

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.001%–1%

SOURCING & ETHICS

Vegan Status: Yes – from jasmine, ylang ylang, peru balsam

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: declared fragrance allergen. ifra guidelines apply.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Benzyl benzoate's natural occurrence in jasmine absolute (up to 6%) means that products containing jasmine absolute naturally contain benzyl benzoate as a declared fragrance allergen – regardless of whether the formulator intentionally added it. this highlights how natural ingredients can automatically generate regulatory allergen declarations.

Last Verified: Cosing database,ifra standards

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides floral-balsamic scent with uv-absorbing fixative properties.

Why It's Used: Natural jasmine-associated fragrance ester with mild uv protection contribution for fragranced sun-exposed products.

How It Works: Salicylate ester absorbs uv-b mildly. provides fixative function by slowing evaporation of lighter fragrance top notes. naturally in jasmine absolute (1-3%). good skin absorption.

Typically Found In: Floral fragrances,sun-exposed products

TECHNICAL DETAILS

Primary Category: Fragrance component – floral fixative

Secondary Functions: Skin conditioning

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.001%–1%

SOURCING & ETHICS

Vegan Status: Yes – from jasmine absolute, or 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: declared fragrance allergen. ifra guidelines apply.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Benzyl salicylate's salicylate moiety provides uv absorption in the uvb range (absorbs at 295-315nm) despite not being a registered uv filter. its occurrence in jasmine absolute means natural jasmine-fragranced products inherently contain a mild uv absorber – an incidental benefit of the natural fragrance chemistry that wasn't intentionally designed as photoprotection.

Last Verified: Cosing database,ifra standards

Primary Sources: 2026-03-12

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

Bis-diglyceryl polyacyladipate-2 has an established safety and efficacy profile within the cosmetic regulatory framework at standard use concentrations.

Last Verified: Cosing database,bis-diglyceryl polyacyladipate-2 technical literature

Primary Sources: 2026-03-12

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

Bis-diglyceryl polyacyladipate-2 has an established safety and efficacy profile within the cosmetic regulatory framework at standard use concentrations.

Last Verified: Cosing database,bis-diglyceryl polyacyladipate-2 technical literature

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides specific aromatic character and olfactory experience contributing to product sensory experience and consumer appeal.

Why It's Used: Fragrance components are the primary cause of cosmetic contact sensitisation — eu requires individual label declaration of 26 identified fragrance allergens above threshold concentrations.

How It Works: Terpenoid and phenylpropanoid aromatic chemicals interact with olfactory receptor neurons (orns) in the nasal epithelium — small volatile molecules (logp 2–5, mw 100–300) bind g-protein coupled olfactory receptors triggering neurological scent perception. sensitisation risk from electrophilic reactivity of certain functional groups (aldehydes, α,β-unsaturated carbonyls) with skin proteins.

Typically Found In: All fragrance 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: Declare on label above threshold (eu)

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

Eu 1223/2009 annex iii allergen threshold: >0.001% in rinse-off, >0.0001% in leave-on — any listed allergen exceeding these levels requires individual inci label declaration separate from the generic fragrance/parfum declaration.

Last Verified: Eu regulation 1223/2009 annex iii,fragrance allergen declaration requirements

Primary Sources: 2026-03-12

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

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

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