Caprylhydroxamic Acid

Caprylhydroxamic Acid is a hydroxamic acid compound used in cosmetic preservation systems. It's chosen to inhibit product spoilage by supporting broad-spectrum preservation, often alongside glycols or organic acids in water-rich formulations.
Like this ingredient?

Ingredient Snapshot

Overview
A preservative that helps keep formulas free of microbes.
Category
Preservative
Type
Preservative

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Helps keep products fresh by discouraging microbial growth, supporting product safety over time, and is useful for maintaining formula quality in water-rich skincare.

Uses In Skincare & Cosmetics

Included in serums, gels, lotions, and masks as part of preservation systems, and often paired with glycols in moisturizers to bolster protection in aqueous formulas.

Comedogenic Rating

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

Safety

Typically used at low levels and is usually tolerated, but it can cause irritation or sensitization for some, especially in leave-on or eye-area products. Discontinue use if persistent redness or stinging occurs.

Is Caprylhydroxamic Acid a Good Ingredient?

As a reliable preservation component, it supports broad-spectrum protection across a wide pH range, which earns a Good rating, though on its own it's moderate and may cause mild irritation in some users; it often works best in blends, which tempers sensitivity risk while maintaining efficacy.

Products with Caprylhydroxamic Acid

Related Ingredients