Acetic Acid

Acetic acid is a simple organic acid, best known as the main constituent of vinegar, used in cosmetic formulations. It regulates product pH, supports preservative systems, and refines stability, though higher levels can increase sting.
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Ingredient Snapshot

Overview
Vinegar's main component, used to balance pH and keep formulas fresh.
Category
Preservative
Type
pH Adjuster

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Helps keep formulas at a skin-comfortable acidity, which can reduce irritation from improperly balanced products. Also supports freshness of the product, though higher amounts may feel prickly on sensitive skin.

Uses In Skincare & Cosmetics

Common in cleansers, toners, and shampoos to fine‑tune acidity and back up preservation systems.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally safe at low levels used for pH control, yet it may cause burning or redness, especially near eyes or on compromised skin. Sensitive users should patch test and avoid mucous membrane contact.

Is Acetic Acid a Good Ingredient?

Fair because it reliably adjusts pH and can support preservation, but benefits are indirect and low‑pH use can sting or irritate sensitive skin.

Products with Acetic Acid

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