pH-adjuster

Tartaric Acid

INCI: TARTARIC ACID
CAS 87-69-4 EC 205-105-7 / 205-695-6 / 201-766-0
2,3-Dihydroxybutanedioic acid
Generally Safe
This ingredient has a good safety profile based on available data.
Purpose

Function

Dicarboxylic AHA (from grapes/wine). Historically significant as an AHA but less stable than glycolic or lactic acid, making it uncommon as a primary exfoliant in modern formulations. More frequently employed as a pH adjuster, chelating agent, and mild exfoliating co-ingredient in combination peels. Contributes synergistic exfoliation in combination acid peels.
Profile

Properties

Silicone
Silicone free
Malassezia
Safe
Fungal Acne
Safe
Details

Description

2,3-Dihydroxybutanedioic acid

Reference

Identifiers

CAS Number
87-69-4
EC Number
205-105-7 / 205-695-6 / 201-766-0
INCI
TARTARIC ACID
Category
pH-adjuster
Updated
Apr 2, 2026