Strawberry Smooth BHA+AHA Salicylic Serum

DESCRIPTION

What It Does: Reduces acne, evens skin tone, calms rosacea, and reduces hyperpigmentation through multiple complementary mechanisms.

Why It's Used: Multi-action gold standard for hyperpigmentation, acne, rosacea, and post-inflammatory hyperpigmentation (pih) – well-tolerated by all skin tones.

How It Works: Inhibits tyrosinase (melanin synthesis) and abnormal melanocyte proliferation. inhibits 5-alpha-reductase (sebum control). antimicrobial against p. acnes and malassezia. anti-inflammatory via nf-kb pathway inhibition.

Typically Found In: Brightening serums,anti-acne treatments,rosacea products,hyperpigmentation formulations

TECHNICAL DETAILS

Primary Category: Active ingredient – dicarboxylic acid

Secondary Functions: Anti-acne,rosacea management,sebum control

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 5%–20% (otc 5–10%; prescription 15–20%)

SOURCING & ETHICS

Vegan Status: Yes – synthetic or from wheat/rye

Halal Status: Yes

Source Notes: Naturally from malassezia yeast on skin; produced by ozonolysis of oleic acid commercially.

SKIN COMPATIBILITY

Irritancy Rating: 2/5 – low to moderate; initial tingling expected

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Initial tingling and stinging normalizes within 2–4 weeks of regular use.

Safe for Sensitive Skin: Use with caution – transient tingling common during introduction

SAFETY & COMPATIBILITY

Safety Profile: Excellent long-term safety. fda-approved for acne (benzaclin) and rosacea (finacea). ewg score: 1.

Works Well With: Ceramides,niacinamide,hyaluronic acid,spf

Avoid Combining With: Multiple exfoliating acids simultaneously; high concentrations without spf

SCIENTIFIC NOTE

Azelaic acid's combined tyrosinase inhibition + abnormal melanocyte selectivity (normalizes only overactive melanocytes, unlike hydroquinone) makes it uniquely safe for long-term use without bleaching normal-pigmented skin.

Last Verified: Cosing database,draelos azelaic acid review,fda drug approval database

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

C9-12 alkane has an established safety and efficacy profile within the cosmetic regulatory framework at standard use concentrations.

Last Verified: Cosing database,c9-12 alkane technical literature

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides antioxidant protection from reactive oxygen species, reduces inflammatory cytokine production in skin, and conditions skin through the plant's phytochemical complex.

Why It's Used: Natural origin narrative, traditional use heritage, and multi-functional phytochemical profile supporting concurrent skin care claims from one ingredient.

How It Works: Polyphenols, terpenoids, and alkaloids scavenge ros via h• donation, inhibit nf-kb or cox-2 inflammatory pathways, and interact with skin surface proteins for conditioning.

Typically Found In: Botanical skin care,natural products

TECHNICAL DETAILS

Primary Category: Active ingredient – antioxidant

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%–10%

SOURCING & ETHICS

Vegan Status: Conditional

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: Excellent safety profile. ewg score: 1.

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

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Plant secondary metabolites evolved as photoprotectants and antimicrobials — mechanisms directly applicable to cosmetic antioxidant and anti-inflammatory activity in human skin.

Last Verified: Cosing database,fragaria vesca (strawberry) fruit e botanical review

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Builds aqueous viscosity through polymer chain entanglement above the overlap concentration, forms conditioning films on skin and hair, and stabilises suspensions through yield stress.

Why It's Used: Natural biopolymer thickeners provide elegant formulation sensory without the tight ph requirements of synthetic carbomers — preferred in shampoos and conditioners where broad ph tolerance and natural origin are both required.

How It Works: Polysaccharide chains above overlap concentration c* entangle forming a viscoelastic network — viscosity scales as c^4.7 above c*, providing steep concentration-viscosity dependence. chemical modification (hydroxypropyl, hydroxyethyl) increases water solubility and cold-processability of otherwise difficult-to-dissolve natural polysaccharides.

Typically Found In: Shampoos,conditioners,gels

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%–5%

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

Biopolymer thickeners are sensitive to electrolyte concentration — high salt levels screen polymer charge interactions reducing viscosity. formulation salt content must be accounted for when selecting polymer concentration for target viscosity.

Last Verified: Cosing database,hydroxypropyl starch phosphate biopolymer thickener review

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides gentle aha exfoliation with lipophilic sebosuppressive anti-acne activity suitable for deeper skin tones.

Why It's Used: Skin-of-colour appropriate aha — mandelic acid's large size reduces pih risk making it the preferred aha for fitzpatrick iv–vi skin tones.

How It Works: Larger mw (152 vs glycolic 76) provides slower penetration reducing irritation and post-inflammatory hyperpigmentation risk. benzene ring provides lipophilicity for better follicular penetration and sebum regulation. antibacterial vs p. acnes from phenolic structure.

Typically Found In: Skin-of-colour exfoliants,anti-acne for sensitive skin

TECHNICAL DETAILS

Primary Category: Active ingredient – skin-of-colour appropriate aha

Secondary Functions: Brightening,collagen stimulation

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 1%–15%

SOURCING & ETHICS

Vegan Status: Yes – from bitter almond or synthetic

Halal Status: Yes

Source Notes: Fermentation-derived or synthetic. ph must be ≤4.0 for aha activity.

SKIN COMPATIBILITY

Irritancy Rating: 2/5 – low to moderate

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Photosensitizing – mandatory spf use. start at low frequency.

Safe for Sensitive Skin: Use with caution – spf required

SAFETY & COMPATIBILITY

Safety Profile: Safe at otc concentrations. eu: ≤10% leave-on at ph ≥3.5. mandatory spf advisory.

Works Well With: Niacinamide,ceramides,hyaluronic acid,spf

Avoid Combining With: Retinol in same step; multiple exfoliants simultaneously

SCIENTIFIC NOTE

Mandelic acid's safety advantage for darker skin tones arises from its slower penetration rate: the larger lipophilic molecule penetrates 2–4× more slowly than glycolic acid, reducing the risk of post-inflammatory hyperpigmentation from irritant-induced melanocyte stimulation — a critical clinical consideration for fitzpatrick iv–vi skin.

Last Verified: Cosing database,khunger & sacchidanand mandelic acid review

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides humectant and solvent functionality with improved skin feel vs butylene glycol.

Why It's Used: Premium humectant solvent with superior skin feel to conventional diols for elegant premium formulation textures.

How It Works: Branched c4 structure provides good humectant activity. branching reduces viscosity and stickiness vs linear propylene glycol. excellent solvent for challenging actives. antimicrobial boosting from diol structure.

Typically Found In: Premium serums,active delivery systems

TECHNICAL DETAILS

Primary Category: Functional ingredient – 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

Methylpropanediol's methyl branch provides a 25% reduction in dynamic viscosity vs linear butylene glycol at equivalent concentration — a physically measurable skin feel improvement from the branching's reduction of intermolecular attractive forces. this viscosity reduction translates directly to the 'less sticky, lighter' skin feel that premium formulations require.

Last Verified: Cosing database,cir safety assessment

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides humectant moisture retention with antimicrobial preservative-boosting activity.

Why It's Used: The balanced multifunctional diol — pentylene glycol provides the ideal balance of humectancy and antimicrobial activity for clean beauty preservation systems with excellent sensory compatibility.

How It Works: C5 diol: longer chain than propylene glycol providing better antimicrobial activity but shorter than 1,2-hexanediol (slightly lower membrane activity). two oh groups provide humectant water binding. solvent for fragrances and some actives. synergistic with phenoxyethanol reducing required phenoxyethanol concentration.

Typically Found In: Clean beauty products,natural preservation systems,moisturisers

TECHNICAL DETAILS

Primary Category: Functional ingredient – multifunctional pentanediol

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: 0.5%–3%

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

Pentylene glycol's position in clean beauty preservation is due to a regulatory quirk: 1,2-pentanediol is not classified as a preservative in eu cosmetics regulations (unlike phenoxyethanol which requires preservative listing), so it can provide antimicrobial activity while not requiring the 'contains preservative' designation — enabling cleaner labels in natural-positioned formulations.

Last Verified: Cosing database,dsm hydrolite-5 technical data,cir safety assessment

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Salicylic acid exfoliates the skin surface and inside pores, dissolves the 'glue' holding dead skin cells together, reduces sebum production, and combats acne-causing bacteria.

Why It's Used: Its oil solubility makes it uniquely effective at penetrating pores and dissolving sebum plugs – a function that water-soluble ahas cannot perform. it is the preferred exfoliant for oily, acne-prone, and congested skin.

How It Works: Salicylic acid disrupts desmosomal bonds between corneocytes, promoting exfoliation. its oil solubility allows it to penetrate the sebaceous follicle, dissolving sebum and dead cells. it also has anti-inflammatory properties by inhibiting prostaglandin synthesis.

Typically Found In: Cleansers,toners,serums,spot treatments,masks,chemical peels,anti-dandruff shampoos,acne treatments

TECHNICAL DETAILS

Primary Category: Active ingredient – beta hydroxy acid (bha)

Secondary Functions: Anti-acne,anti-dandruff,keratolytic

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.5%–2% (otc acne treatment in us); up to 30% in professional chemical peels

SOURCING & ETHICS

Vegan Status: Yes – synthetic or willow bark derived

Halal Status: Yes

Source Notes: Naturally occurring in willow bark (salix alba) and wintergreen oil. commercially produced synthetically via kolbe-schmitt reaction for cosmetic use.

SKIN COMPATIBILITY

Irritancy Rating: 3/5 – moderate; can cause dryness, peeling, and irritation, especially at higher concentrations

Comedogenicity Rating: 0/5 – non-comedogenic; actually anti-comedogenic

Sensitivity Concerns: Can cause irritation, dryness, and sun sensitivity. avoid contact with eyes. not recommended during pregnancy at high concentrations. can be drying – follow with moisturizer.

Safe for Sensitive Skin: Use with caution – start with lower concentrations and frequency; may not be suitable for reactive or rosacea-prone skin

SAFETY & COMPATIBILITY

Safety Profile: Safe at otc concentrations (0.5–2%). regulated as a drug in some countries (us: fda category i acne treatment). avoid in pregnancy at high concentrations.

Works Well With: Niacinamide,zinc,tea tree oil,benzoyl peroxide (at different times),hyaluronic acid (to counteract dryness)

Avoid Combining With: High concentrations of retinol (cumulative irritation),multiple exfoliating acids simultaneously,benzoyl peroxide in same step (can increase irritation)

SCIENTIFIC NOTE

Salicylic acid is a member of the salicylate family and shares structural similarity with aspirin. its anti-inflammatory mechanism mirrors aspirin's cox inhibition pathway, making it uniquely effective for inflammatory acne.

Last Verified: Cosing database,cir safety assessment,us fda acne monograph,journal of the american academy of dermatology

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides skin-compatible emolliency from the fatty acid chain sc integration, forms soaps/fatty acid salts with alkali bases for self-emulsifying cream systems, and supplements sc free fatty acid (ffa) content depleted in barrier-compromised skin.

Why It's Used: Fatty acids are essential in stearic acid/triethanolamine soap-base cream systems — a formulation architecture used for over 100 years producing elegant, stable o/w emulsions through in-situ soap formation during manufacturing.

How It Works: Free fatty acids (rcooh, pka ~4.5–5.5) exist at skin ph as a mixture of protonated (emollient) and ionised (soap) forms. when neutralised with alkali during manufacturing, the carboxylate soap form (rcoo⁻) provides emulsification. the sc barrier's free fatty acid layer includes c16–c22 saturated and unsaturated acids identical to common cosmetic fatty acids — topical fatty acid application directly supplements this barrier lipid fraction.

Typically Found In: Cream formulation,barrier repair,emollient base

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: 0.5%–20%

SOURCING & ETHICS

Vegan Status: Conditional

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

Stearic acid/triethanolamine (tea) soap-base creams require precise ph control: below ph 6, excess free stearic acid co-crystallises with the soap providing thickening through acid-soap gel formation; above ph 8, full saponification produces liquid thin emulsions. the ph range 6–7 provides optimal acid-soap balance for cream texture.

Last Verified: Cosing database,succinic acid fatty acid emollient barrier review

Primary Sources: 2026-03-12