Bumble and bumble Bond-Building Repair Hair Oil Serum

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: 1

Comedogenicity Rating: 2

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 lipid-soluble antioxidant protection in skin and oil-based formulations.

Why It's Used: Oil-based formulations as fat-soluble vitamin c active and formulation antioxidant preservative (e304).

How It Works: Skin esterases cleave the bond releasing ascorbic acid and palmitic acid. lipophilic form may integrate into cell membranes for lipid-phase antioxidant protection.

Typically Found In: Oil serums,emulsions,sunscreens,anti-aging creams

TECHNICAL DETAILS

Primary Category: Active ingredient – vitamin c derivative

Secondary Functions: Lipid-soluble antioxidant,formulation preservative

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.1%–1%

SOURCING & ETHICS

Vegan Status: Yes – synthetic

Halal Status: Yes

Source Notes: Esterification of ascorbic acid with palmitic acid. gras food additive (e304).

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 1/5 – very low; palmitic acid minor concern

Sensitivity Concerns: Non-irritating; suitable for all skin types.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Excellent safety profile. ewg score: 1.

Works Well With: Tocopherol,ferulic acid,niacinamide,spf

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Debate exists about efficiency of ester hydrolysis in intact skin and prooxidant potential of uv degradation products. formulating with the antioxidant triad (c+e+ferulic) mitigates this concern.

Last Verified: Cosing database,cir safety assessment,ewg skin deep

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides dual fragrance and preservative activity as an aromatic alcohol.

Why It's Used: Multi-function ingredient serving as both fragrance component and preservative – reduces formulation complexity by providing both functions in one ingredient.

How It Works: Phenylcarbinol provides antimicrobial activity via membrane disruption (effective vs gram-positive bacteria and moulds). solvent for fragrances and difficult-to-dissolve actives. mild oxidative conversion to benzaldehyde provides sweet almond-like fragrance.

Typically Found In: Fragrances,preserved cosmetics,solvent systems

TECHNICAL DETAILS

Primary Category: Fragrance component / preservative

Secondary Functions: Skin conditioning

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.001%–1% (fragrance); up to 1% as preservative

SOURCING & ETHICS

Vegan Status: Yes – from toluene, or jasmine absolute

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. also listed as approved preservative (annex v, max 1%). dual regulatory status (fragrance + preservative) depending on function and concentration.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Benzyl alcohol's dual regulatory status (fragrance allergen and approved preservative) creates a formulation paradox: it must be listed as a fragrance allergen if present >0.001% (leave-on) regardless of whether it was added for fragrance or preservation. this regulatory dual identity means a preservative added for antimicrobial function triggers the same allergen declaration requirement as a fragrance added for scent.

Last Verified: Cosing database,ifra standards,eu preservative annex v

Primary Sources: 2026-03-12

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 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 humectant hydration and active ingredient solubilization with excellent skin feel.

Why It's Used: Preferred glycol humectant in premium and k-beauty formulations for superior skin feel vs propylene glycol with equivalent functionality.

How It Works: Two hydroxyl groups at 1,3-positions provide water binding and solvent activity. better tolerated than propylene glycol with minimal sensitization risk. 4-carbon backbone provides slightly greater hydrophobic character enabling dissolution of less polar actives vs pg.

Typically Found In: Toners,essences,serums,k-beauty formulas

TECHNICAL DETAILS

Primary Category: Functional ingredient – glycol humectant

Secondary Functions: Tewl reduction,skin plumping

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: Yes – synthetic

Halal Status: Yes

Source Notes: Synthetic or naturally derived. excellent aqueous solubility.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Non-irritating; suitable for all skin types.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Excellent safety profile. ewg score: 1.

Works Well With: Ceramides,emollients,occlusives,glycerin,hyaluronic acid

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

K-beauty's preference for butylene glycol over propylene glycol is driven by two factors: bg's superior skin feel (less tacky than pg's higher viscosity) and its lower sensitization potential (1,3-bg has better spatial distribution of hydroxyl groups that reduces protein interaction vs pg's 1,2-position oh groups).

Last Verified: Cosing database,cir safety assessment

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides the most potent antimicrobial diol activity alongside skin feel enhancement.

Why It's Used: Premium antimicrobial diol — caprylyl glycol's c8 chain provides the strongest membrane-disrupting antimicrobial activity of common diol preservative boosters with unique skin-feel enhancement.

How It Works: C8 1,2-diol: c8 chain length provides strongest bacterial and fungal membrane disruption of common diols. emollient skin feel improvement from c8 chain length interaction with skin surface. active at lower concentrations than shorter-chain diols. synergistic with ethylhexylglycerin.

Typically Found In: Natural preservation systems,skin feel enhancement

TECHNICAL DETAILS

Primary Category: Functional ingredient – antimicrobial humectant

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%

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

Caprylyl glycol's antimicrobial potency follows the chain-length dependent membrane activity of fatty acids: c8 is the optimal chain length for membrane disruption (same as caprylic acid's antimicrobial optimum), providing maximum membrane integration without the skin sensitisation associated with longer chain lengths. this chain-length pharmacophore relationship is why c8 > c6 > c5 in diol antimicrobial potency despite identical head group chemistry.

Last Verified: Cosing database,schülke sensiva sc 50 technical data,cir safety assessment

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides the defining intense lemon-citrus fragrance note.

Why It's Used: The lemon scent compound – citral defines the fresh lemon scent in lemon essential oil and lemongrass with potent antimicrobial activity.

How It Works: Mixture of e-isomer (geranial) and z-isomer (neral). antimicrobial via michael addition to thiol enzymes. inhibits nf-kb for anti-inflammatory activity. antioxidant via allylic aldehyde.

Typically Found In: Citrus fragrances,antibacterial products,lemon-scented cosmetics

TECHNICAL DETAILS

Primary Category: Fragrance component – lemon aldehyde

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%–0.5%

SOURCING & ETHICS

Vegan Status: Yes – from lemon, lemongrass, melissa oils

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. high sensitisation potential from alpha,beta-unsaturated aldehyde structure. ifra strict limits.

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Citral's high sensitisation potential (llna ec3 ~0.11%) is a consequence of its alpha,beta-unsaturated aldehyde structure providing a highly reactive michael acceptor for skin protein covalent binding. the e/z mixture (geranial/neral) in natural citral means both isomers contribute to the sensitisation burden – explaining why lemongrass oil (very high citral content, ~60-80%) is one of the more common essential oil allergens.

Last Verified: Cosing database,ifra standards

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides the characteristic sweet hay-vanilla warmth central to fougère fragrance compositions.

Why It's Used: The fougère fragrance family-defining compound – coumarin is the essential warm-sweet note in lavender-oakmoss-coumarin fougère compositions that define men's cologne classics.

How It Works: Bicyclic lactone provides sweet hay-vanilla scent from its conjugated carbonyl system. good skin absorption for lasting fragrance. low volatility provides fixative properties.

Typically Found In: Fougère fragrances,men's cologne,warm oriental fragrances

TECHNICAL DETAILS

Primary Category: Fragrance component – lactone

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 – synthetic; natural from dipteryx odorata

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 restrict due to hepatotoxicity at high oral doses (not from topical use).

Works Well With: Standard skincare actives

Avoid Combining With: No known significant incompatibilities

SCIENTIFIC NOTE

Coumarin's natural source (tonka beans, dipteryx odorata) led to its historical use in food flavouring until toxicological studies revealed hepatotoxicity at high oral doses. the restriction of coumarin from food flavouring (eu and fda) drove fragrance reformulation in some cosmetic categories, though topical exposure levels from cosmetics are orders of magnitude below hepatotoxic doses.

Last Verified: Cosing database,ifra standards

Primary Sources: 2026-03-12