Chlorhexidine Digluconate

Chlorhexidine digluconate is a cationic biguanide salt used in cosmetics and oral-care products for its potent, broad-spectrum antimicrobial activity. It's chosen to preserve water-based formulas and support hygiene at low levels under suitable pH ranges.
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Ingredient Snapshot

Overview
An antimicrobial preservative that keeps water-based formulas from spoiling.
Category
Preservative
Type
Preservative

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Maintains product integrity by suppressing contaminating microbes, extending practical shelf life. In oral-care products, it can reduce odor-causing bacteria; direct cosmetic skin benefits are limited.

Uses In Skincare & Cosmetics

Found in mouthwashes, dental gels, hand washes, and some facial cleansers as a low‑level antimicrobial preservative. Also used in watery toners and gels where cationic preservation is desired.

Comedogenic Rating

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

Safety

May cause irritation, dryness, or contact allergy in some users; stinging is more likely on sensitive or broken skin. In oral‑care formats it can cause temporary taste changes or staining. Discontinue if sensitivity occurs.

Is Chlorhexidine Digluconate a Good Ingredient?

It's highly effective at low levels, but it offers minimal direct skin benefits and can irritate skin or mucosa, particularly at higher concentrations or on compromised barriers. That mix of modest evidence and some risk keeps it at a Fair rating rather than Good.

Products with Chlorhexidine Digluconate

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