Ingredient name record

LACTIC ACID

Korean search label: 락틱애씨드

Evidence at a glance

3official function labelsIngredient context 2selected human studiesNot a full review

0selected legal receiptsNot a compliance verdict

Evidence coverage, not an efficacy or safety score.

Identity & coverage details

Official CosIng inventory context recorded; chemical identity and the complete current regulatory profile remain unverified; selected human studies available.

Recorded presence is not a safety rating, recommended dose or benefit claim.

Identity and formulation context

Names are indexed using case and whitespace normalization. Botanical, chemical and marketing identities have not been independently equated.

Selected topical human studies show why a percentage alone is incomplete formulation evidence. Tested lactic acid is not treated as equivalent to sodium lactate or other salts. Study schedules are not usage recommendations.

Discovery spellings and aliases

aha 락틱 · l-lactic acid · lactic acid · 락틱 애씨드 · 락틱애씨드 · 유산 · 젖산

Search-only metadata; an alias is not proof of chemical equivalence.

Functions listed by CosIng

BUFFERINGHUMECTANTSKIN CONDITIONING

Inventory functions describe the ingredient entry, not a finished product’s effects.

How this inventory match is used

The European Commission’s CosIng inventory is informational. An entry is not permission to use an ingredient or a safety assessment. Listed functions describe the inventory entry; they do not establish a finished product’s effects. The match uses the exact ingredient name, with case and whitespace normalization.

LACTIC ACID · Inventory identifiers

Inventory record: 34809 · Active
CAS identifiers in this entry: 50-21-5
EC identifiers in this entry: 200-018-0

Checked 2026-10-02 · Read the official CosIng entry

Human study context

Primary publications checked 2026-10-02. These are selected studies, not a systematic review, safety rating or instructions for using a product.

Epidermal and dermal effects of topical lactic acid.

1996 · Original abstract reviewed

Material tested: Preparations containing 5% or 12% lactic acid. Vehicle and pH are not specified in the abstract.
Study design: Comparison of two concentrations with clinical and epidermal/dermal assessments; randomization and control details are not stated in the abstract.
Participants: Human test participants; sample size and demographic details are not stated in the abstract.
Concentration and schedule in the study: Twice daily for three months.
What the authors reported: The 12% preparation changed dermal and epidermal measures and visible texture; 5% produced surface and epidermal changes without observed dermal changes.

What this does not establish

Sample size, vehicle, pH and control details are absent from the abstract.
The study does not establish outcomes for another finished product or a use schedule for consumers.

Read the original publication

The roles of pH and concentration in lactic acid-induced stimulation of epidermal turnover.

1998 · Original journal article reviewed

Material tested: 10% lactic acid at pH 2, 3 and 4; 5%, 10% and 15% lactic acid at pH 3.
Study design: Double-blind randomized placebo-controlled trial; dansyl chloride staining measured renewal.
Participants: 26 female subjects.
Concentration and schedule in the study: Duration and application frequency are not stated in the abstract.
What the authors reported: Renewal varied with pH when concentration was held constant and with concentration when pH was held constant.

What this does not establish

The abstract gives no exact magnitude or exposure duration.
Concentration alone cannot transfer the results to a product with unverified pH or vehicle.
The study was supported by Cosmederm Technologies, Inc.

Read the original publication

Still unverified

Selected partial literature coverage, not a systematic review.
No study preparation has been matched to a Treatfolio product, batch or package.
Finished-product pH, free-acid fraction and outcomes remain unknown.
Chemical identity, the complete current regulatory profile and finished-product effects remain unverified.