Dehydroacetic Acid

Dehydroacetic Acid is a ring-structured organic preservative effective within defined pH ranges in cosmetic and toiletry products. Brands include it to curb microbial contamination, extend usable life, and support formula stability alongside other agents.
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Ingredient Snapshot

Overview
A preservative that keeps formulas from spoiling.
Category
Preservative
Type
Preservative

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Reduces risk of spoilage that can alter appearance or odor. Helps keep formulas dependable throughout their intended shelf life within effective pH.

Uses In Skincare & Cosmetics

Commonly incorporated into sunscreens, toners, and lotions as a pH-aware preservative component. Also used in hair care like leave-in treatments and rinses to support product longevity.

Comedogenic Rating

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

Safety

Low overall irritation potential, though sensitive users can experience mild reactions. Subject to EU preservative restrictions at up to 0.6% (dehydroacetic acid and its salts). Use as directed within appropriate pH ranges.

Is Dehydroacetic Acid a Good Ingredient?

Good: Proven preservative that performs reliably within suitable pH, often paired with other agents for broader coverage. Sensitization is rare but possible, and activity diminishes if the formula’s pH is not in its effective window.

Products with Dehydroacetic Acid

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