Good Active Ingredient Dermal Penetration

Malic Acid

INCI: MALIC ACID

Malic Acid (CAS 617-48-1) is a cosmetic active ingredient functioning as Dicarboxylic AHA from apples (Pyrus Malus). Lacks the exfoliating potency of. NOAEL 600 mg/kg bw/day (cross-referenced against ToxValDB ECHA IUCLID); EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.

View industrial chemical safety profile for CAS 617-48-1 →

Auto-generated CPSR Part A draft with source citations
Function
Dicarboxylic AHA from apples (Pyrus Malus). Lacks the exfoliating potency of glycolic or lactic acid and is typically used in combination with other AHAs, particularly in brightening and anti-hyperpigmentation formulations. Contributes mild exfoliation, pH buffering, and chelation in multi-acid blends.
Safety Rating
GOOD

Chemistry & Identifiers

EC Number
210-514-9

Regulatory Status

EU EU Status permitted
US US Status permitted
US Notes GRAS affirmed under 21 CFR 184.1069 (both DL- and L-forms) as food additive (pH control, flavor enhancer, antimicrobial). Not permitted in baby food. FDA recommends ≤10% concentration at pH ≥3.5 for consumer OTC cosmetics. Professional/salon use up to 30% at pH ≥3.0. Mandatory Sunburn Alert labeling recommended per FDA 2005 AHA guidance. Not a GRASE sunscreen ingredient.

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for Malic Acid.

Calculate MoS for your specific formulation with the MoS Calculator.

Pre-Calculated Safety Assessment

Pre-calculated NOAEL → SED → MoS audit trail for Malic Acid across SCCS product categories, with measured dermal absorption where available.

Dermal Penetration Profile

Skin absorption and penetration characteristics of Malic Acid, relevant to systemic exposure and MoS calculations.

Absorption %
6-10%
Penetration Level
stratum-corneum
Penetration Depth
stratum corneum/epidermis
Molecular Weight
134.1 Da
Log P
-1.26
Systemic Absorption
minimal
Topical Bioavailability
4-8%
Safety Margin Factor
low
Vehicle Dependent
Yes — absorption varies by formulation

Source: Int J Cosmet Sci 2009

ECHA REACH Registration

European Chemicals Agency REACH dossier and Substances of Very High Concern listing.

Registration Type
Full
Tonnage Band
10,000 - 100,000 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No

Additional Ingredient Properties

10 property records from structured ingredient metadata.

acne
{"cas_number": "6915-15-7", "anti_acne_mechanism": "keratolytic", "comedogenicity_rating_0_to_5": "0", "acne_type_efficacy": "non_inflammatory", "sebum_reduction_pct_clinical": "5-8", "keratolytic_strength": "mild", "exfoliation_mechanism": "chemical", "optimal_ph_for_efficacy": "3.0-4.0", "aha_type": "malic", "peel_depth": "superficial", "prescription_required_usa": "No", "otc_drug_monograph_cate…
anti_pollution
{"cas_number": "97-67-6", "ingredient_class": "heavy_metal_chelator", "primary_mechanism": "chelation", "pollution_types_targeted": "heavy_metals", "IR_A_protection": "no", "visible_light_protection": "no", "digital_screen_protection_claim": "no", "PAH_neutralization": "no", "ozone_protection": "no", "mitochondrial_protection": "no", "Nrf2_activation": "no", "AhR_pathway_modulation": "no", "NF_kB_…
baby_pediatric
{"cas_number": "6915-15-7/617-48-1", "ingredient_class": "other", "pediatric_safety_rating": "acceptable", "minimum_age_months": "12", "neonatal_safe": "no", "premature_infant_safe": "insufficient_data", "skin_barrier_maturity_consideration": "AHA - mild", "transepidermal_absorption_risk_pediatric": "low", "systemic_exposure_concern_pediatric": "low", "dose_per_kg_body_weight_concern": "Chelator/b…
comedogenicity_detail
{"comedogenicity_rating": "0", "irritancy_rating": "2", "skin_type_suitability": "all,combination,normal,mature", "acne_safe": "yes", "source": "AHA exfoliant"}
concentration
{"min_concentration_pct": "1.0", "max_concentration_pct": "5.0", "typical_concentration_pct": "3.0", "product_type": "Serum", "function_at_concentration": "Exfoliation, antioxidant", "source": "Supplier TDS"}
cost_pricing
{"cost_tier": "budget", "estimated_cost_per_kg_usd_low": "12", "estimated_cost_per_kg_usd_high": "20", "natural_premium_markup_pct": "0", "organic_certified_premium_pct": "0", "supply_chain_volatility": "low", "primary_source_region": "China", "bulk_discount_threshold_kg": "300", "seasonal_price_variation": "low", "commodity_or_specialty": "commodity", "substitute_ingredients": "Tartaric Acid, Cit…
depigmentation
{"cas_number": "6915-15-7", "ingredient_class": "keratinocyte_turnover_enhancer", "primary_mechanism_of_action": "AHA from apples; gentle exfoliation", "secondary_mechanisms": "Variable", "molecular_target": "other", "tyrosinase_inhibition_IC50_uM": "varies", "tyrosinase_inhibition_type": "competitive", "melanin_reduction_pct_in_vitro": "25-45", "melanin_reduction_pct_clinical": "15-30", "onset_of…
dermal_absorption
{"molecular_weight_da": "134.1", "log_p_value": "-1.26", "skin_penetration_level": "stratum-corneum", "penetration_depth": "stratum corneum/epidermis", "absorption_pct": "6-10", "systemic_absorption": "minimal", "penetration_enhancer": "yes", "occlusion_effect": "no", "vehicle_dependent": "yes", "skin_barrier_effect": "weakens", "bioavailability_topical_pct": "4-8", "safety_margin_factor": "low", …

Expert Verdict

Expert safety assessment and concern-level summary for Malic Acid.

Regulatory Flags

eu-unrestricted cir-approved no-sccs-opinion gras-fda phototoxic epa_safer_alternative ifra_fragrance fda_food_additive

NOAEL Studies Summary

View details ->

Public NOAEL study rows linked to Malic Acid by CAS number or substance name.

Studies
9
Lowest NOAEL
300 mg/kg bw/day
Highest NOAEL
1000 mg/kg bw/day
ToxValDB_ECHA_IUCLID ECHA_REACH_reach_study_results_dossiers_23-05-2023.zip

Frequently Asked Questions

Is Malic Acid safe in cosmetics?

Malic Acid has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.

Is Malic Acid allowed in the EU?

Malic Acid EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Malic Acid do in cosmetics?

Malic Acid functions as: Dicarboxylic AHA from apples (Pyrus Malus). Lacks the exfoliating potency of glycolic or lactic acid and is typically used in combination with other AHAs, particularly in brightening and anti-hyperpigmentation formulations. Contributes mild exfoliation, pH buffering, and chelation in multi-acid blends.. It is classified as a Active Ingredient in our database. CAS number: 617-48-1.

Is Malic Acid used outside cosmetics?

Malic Acid also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

Does Malic Acid have different safety status in cosmetics vs industrial chemicals?

Malic Acid is classified GHS Danger (H302, H315, H318, H319, H335) in the chemicals database but is allowed in EU cosmetics.

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