The Derma Co. 2% Salicylic BHA Hydrating Toner - 150 ml

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

1-2-hexanediol has an established safety and efficacy profile within the cosmetic regulatory framework at standard use concentrations.

Last Verified: Cosing database,1-2-hexanediol technical literature

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Stimulates collagen synthesis, inhibits mmp-mediated matrix degradation, or provides amino acid-specific skin metabolic support — delivering measurable anti-aging benefit at ppm concentrations.

Why It's Used: Precision sequence-receptor pharmacology enables mechanism-based anti-aging claims — defined amino acid sequence targeting specific receptors with quantifiable binding kinetics.

How It Works: Peptide receptor binding → kinase cascade → col1a1/col3a1 upregulation + mmp-1/mmp-3 downregulation. spps synthesis provides >98% sequence purity for reproducible receptor binding.

Typically Found In: Anti-aging serums,collagen products

TECHNICAL DETAILS

Primary Category: Active ingredient – peptide

Secondary Functions: Collagen synthesis,anti-aging

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 1–5000 ppm

SOURCING & ETHICS

Vegan Status: Yes

Halal Status: Yes

Source Notes: Synthetically produced via solid-phase peptide synthesis (spps).

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Non-irritating at recommended concentrations.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

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

Works Well With: Retinoids,niacinamide,vitamin c,hyaluronic acid

Avoid Combining With: Strong acids below ph 3.5; oxidising agents

SCIENTIFIC NOTE

Conjugated peptides provide dual mechanism: the peptide sequence provides receptor-mediated collagen synthesis stimulation while the aromatic/vitamin conjugate adds independent antioxidant or metabolic cofactor activity.

Last Verified: Cosing database,ascorbyl propyl hyaluronate signal peptide anti-aging review

Primary Sources: 2026-03-22

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 1000x water retention humectancy with silicon-enhanced barrier integration for superior hydration versus standard ha formulations.

Why It's Used: Dimethylsilanol modification provides performance advantages over standard sodium hyaluronate — the modification providing the specific functional improvement for targeted applications

How It Works: Ha backbone (beta-1,3/beta-1,4 glucuronate-glcnac disaccharide repeat) provides the 1000x water binding from polyanionic carboxylate groups. dimethylsilanol modification alters the physicochemical properties — molecular weight, charge, or lipophilicity — to provide specific delivery or retention advantages versus unmodified ha.

Typically Found In: Anti-aging hydration,premium serums

TECHNICAL DETAILS

Primary Category: Active ingredient – humectant

Secondary Functions: Moisture retention,hydration

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.1%–2%

SOURCING & ETHICS

Vegan Status: Yes

Halal Status: Yes

Source Notes: Plant-derived or fermentation-produced.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: Non-irritating; suitable for sensitive skin.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

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

Works Well With: Ceramides,emollients,occlusives,barrier actives

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Ha molecular weight determines skin penetration vs surface hydration: ultra-low mw (<10 kda) penetrates sc to dermis; low mw (50-300 kda) intermediate penetration; high mw (>1 mda) surface film only. chemical modification (acetylation, crosslinking) provides independent control of these delivery properties.

Last Verified: Cosing database,dimethylsilanol hyaluronate ha derivative review

Primary Sources: 2026-03-22

DESCRIPTION

What It Does: Provides metal ion chelation to prevent product degradation and boost preservative and antioxidant efficacy.

Why It's Used: The most essential stability ingredient in cosmetics — disodium edta's metal chelation prevents rancidity, discoloration, and preservative failure caused by trace metal contamination in virtually all aqueous cosmetic formulations.

How It Works: Ethylenediaminetetraacetic acid provides six potential coordination sites for metal ions (aminodiacetate groups). chelates ca²⁺, mg²⁺ (stability), fe³⁺ (fenton radical prevention), cu²⁺ (oxidase inhibition). disrupts gram-negative bacterial outer membrane by chelating membrane calcium, enhancing preservative penetration.

Typically Found In: Virtually all aqueous cosmetics — creams, lotions, shampoos, toners

TECHNICAL DETAILS

Primary Category: Functional ingredient – chelating agent

Secondary Functions: Skin conditioning

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.005%–0.1%

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

Disodium edta's preservative potentiation against gram-negative bacteria is mechanistically elegant: gram-negative outer membranes contain lipopolysaccharide stabilised by calcium and magnesium bridges. edta chelates these metal ions, destabilising the lps layer and creating pores that allow hydrophobic preservatives (phenoxyethanol, parabens) to penetrate — converting gram-negative-resistant preservatives into broad-spectrum ones.

Last Verified: Cosing database,cir safety assessment

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Hyaluronic acid draws and locks moisture into the skin at multiple depths (surface and deeper layers depending on molecular weight), creating a plumping, smoothing, and hydrating effect.

Why It's Used: It is used because it is endogenous to human skin, making it exceptionally biocompatible and non-irritating. its unparalleled moisture-binding capacity makes it the most effective hydrating ingredient available.

How It Works: Ha binds water molecules through its many hydroxyl and carboxyl groups, creating a gel-like matrix. high molecular weight ha (>500 kda) hydrates the skin surface; low molecular weight ha (<50 kda) penetrates deeper to provide interior hydration.

Typically Found In: Serums,moisturizers,sheet masks,toners,eye creams,lip treatments,dermal fillers (injectable)

TECHNICAL DETAILS

Primary Category: Active ingredient – humectant/hydrator

Secondary Functions: Barrier repair,plumping,anti-aging

Application Areas:

Facial Skincare

Body Care

Hair Care

Beard Care

Color Cosmetics (Makeup)

Dietary/Oral Supplements

Typical Concentration Range: 0.1%–2% (effective at very low concentrations; multi-weight ha provides superior results)

SOURCING & ETHICS

Vegan Status: Yes – biotechnology-derived (microbial fermentation of streptococcus equi or b. subtilis); vegan-certified versions widely available

Halal Status: Yes

Source Notes: Originally extracted from rooster combs; now predominantly produced via biotechnology (bacterial fermentation), which is vegan and more sustainable.

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low; one of the gentlest skincare ingredients known

Comedogenicity Rating: 0/5 – non-comedogenic

Sensitivity Concerns: In very dry environments, high-molecular-weight ha on the surface can potentially draw moisture out of the skin if not sealed with an occlusive. apply to damp skin and seal with moisturizer.

Safe for Sensitive Skin: Yes – ideal for all skin types including rosacea, eczema, and post-procedure skin

SAFETY & COMPATIBILITY

Safety Profile: Exceptional safety profile. endogenous molecule – no toxicity concerns. ewg hazard score: 1. safe during pregnancy.

Works Well With: Virtually all ingredients; especially ceramides,glycerin,peptides,retinol (reduces irritation),niacinamide,vitamin c

Avoid Combining With: No significant incompatibilities; high concentrations of alcohol in a formula may reduce its efficacy

SCIENTIFIC NOTE

Hyaluronic acid naturally degrades in skin (half-life ~1–2 days). the skin produces it endogenously, but production decreases with age. multi-molecular-weight ha formulas provide hydration at both surface and deeper skin levels.

Last Verified: Cosing database,cir safety assessment,papakonstantinou et al. (2012) dermato-endocrinology

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Hydrates skin at multiple depths depending on mw, provides visible plumping from dermal water retention, reduces tewl, and supports barrier integrity and fibroblast proliferation.

Why It's Used: The reference humectant in cosmetics — ha's 1,000× water binding capacity, skin-endogenous origin, and compatibility with all skin types make it the standard against which all humectants are benchmarked.

How It Works: High-mw ha (>1000 kda) films the surface reducing tewl; medium-mw (100–1000 kda) hydrates outer epidermis; low-mw (<50 kda) reaches dermis for plumping. each weight class binds water through carboxylate and amide group h-bonding across the (glcua-glcnac)ₙ disaccharide backbone.

Typically Found In: Hydrating serums,moisturisers,anti-aging

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: 0.01%–2%

SOURCING & ETHICS

Vegan Status: Yes

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

Ha production by streptococcus zooepidemicus fermentation provides high-purity, animal-free hyaluronic acid at molecular weights 50 kda–3 mda — batch selection determines the intended skin depth target.

Last Verified: Cosing database,hyaluronic acid multi-weight humectant review

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Hydrates skin at multiple depths depending on mw, provides visible plumping from dermal water retention, reduces tewl, and supports barrier integrity and fibroblast proliferation.

Why It's Used: The reference humectant in cosmetics — ha's 1,000× water binding capacity, skin-endogenous origin, and compatibility with all skin types make it the standard against which all humectants are benchmarked.

How It Works: High-mw ha (>1000 kda) films the surface reducing tewl; medium-mw (100–1000 kda) hydrates outer epidermis; low-mw (<50 kda) reaches dermis for plumping. each weight class binds water through carboxylate and amide group h-bonding across the (glcua-glcnac)ₙ disaccharide backbone.

Typically Found In: Hydrating serums,moisturisers,anti-aging

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: 0.01%–2%

SOURCING & ETHICS

Vegan Status: Yes

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

Ha production by streptococcus zooepidemicus fermentation provides high-purity, animal-free hyaluronic acid at molecular weights 50 kda–3 mda — batch selection determines the intended skin depth target.

Last Verified: Cosing database,hyaluronic acid multi-weight humectant review

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides non-ionic thickening compatible with anionic surfactants and electrolyte-containing formulations.

Why It's Used: Non-ionic cellulose thickener for surfactant systems where anionic/cationic thickener incompatibility is a concern.

How It Works: Hydroxyethyl substitution disrupts cellulose crystallinity enabling water solubility. non-ionic nature provides compatibility with anionic, cationic, and amphoteric surfactants. pseudoplastic rheology provides shear-thinning for dispensing. film formation from cellulose backbone.

Typically Found In: Shampoos,body washes,clear gels,surfactant systems

TECHNICAL DETAILS

Primary Category: Functional ingredient – cellulose thickener

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: 0.1%–3%

SOURCING & ETHICS

Vegan Status: Yes – from cellulose (plant)

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

Hydroxyethylcellulose's non-ionic character is its primary differentiator from anionic carboxymethylcellulose – the absence of ionizable groups means hec maintains stable viscosity across ph 2-12 and at high electrolyte concentrations where carboxymethylcellulose destabilizes. this ionic independence makes hec the preferred cellulose thickener for acidic and salt-containing formulations.

Last Verified: Cosing database,ashland hec technical data,cir safety assessment

Primary Sources: 2026-03-12

DESCRIPTION

What It Does: Provides the characteristic functional benefit of its chemical class — the specific molecular architecture, functional groups, and physicochemical properties delivering the intended cosmetic activity at recommended use concentration.

Why It's Used: Selected for the functional contribution of its specific molecular structure — surface chemistry, reactivity profile, or biological activity as appropriate for the intended formulation role.

How It Works: The functional groups in hydroxypropyltrimonium hyaluronate interact with formulation components and skin surfaces through h-bonding, ionic association, surface adsorption, van der waals forces, or covalent reaction depending on the specific chemistry — the combined interactions providing the cosmetic benefit.

Typically Found In: Cosmetic 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

Safety and function documented in cosing and cosmetic chemistry technical literature at standard formulation concentrations.

Last Verified: Cosing database,hydroxypropyltrimonium hyaluronate technical review

Primary Sources: 2026-03-12