FDA approved Dyna-hex 4 (chlorhexidine gluconate) for Healthcare Personnel HandwashFDA approved Dyna-hex 4 for handwashing and skin cleansing.

FDA From the archive Source published December 24, 1984 Summary added July 29, 2026 DOI ↗ Editorial oversight: Dr. Amelia Tan, PhD · Internal Medicine & Chronic Disease

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Key Takeaway

Consider Dyna-hex 4 for hand hygiene and skin cleansing, but watch for allergic reactions and avoid contact with eyes, ears, and mucous membranes.

The FDA has approved Dyna-hex 4 (chlorhexidine gluconate) for use as a healthcare personnel handwash, skin wound cleansing, and general skin cleansing. The product is intended to reduce bacteria that potentially can cause disease. Clinicians should note that the label includes specific warnings: the product is for external use only and may cause severe allergic reactions, including wheezing, difficulty breathing, shock, facial swelling, hives, and rash. It should not be used in contact with the meninges or in the genital area. Additionally, it can cause serious eye injury if it enters and remains in the eye, and deafness if instilled in the middle ear through a perforated eardrum. The label advises caution in premature infants or infants under 2 months of age due to risk of irritation or chemical burns.

＋ Clinical Details (Mechanism · Dosing · Trial Data · Warnings)

Mechanism of Action

Not reported in label.

Indication & Patient Population

Dyna-hex 4 is indicated for healthcare personnel handwash to help reduce bacteria that potentially can cause disease. It is also indicated for skin wound and general skin cleansing. The label does not specify a particular patient population beyond general use, with caution advised for premature infants or infants under 2 months of age.

Dosing & Administration

For healthcare personnel handwash: wet hands with water, dispense about 5 mL of product into cupped hands, wash vigorously for about 15 seconds, rinse, and dry thoroughly. For skin wound and general skin cleansing: thoroughly rinse the area to be cleaned with water, apply the minimum amount necessary to cover the skin or wound area, wash gently, and rinse again thoroughly.

Key Clinical Trial Data

Not reported in label.

Warnings & Contraindications

For external use only. Allergy alert: may cause severe allergic reaction (wheezing, difficulty breathing, shock, facial swelling, hives, rash). If allergic reaction occurs, stop use and seek medical help. Do not use if allergic to chlorhexidine gluconate or any ingredient. Do not use in contact with meninges or in the genital area. Keep out of eyes, ears, and mouth; may cause serious permanent eye injury or deafness if instilled in middle ear through perforated eardrums. If contact occurs, rinse promptly and thoroughly with water. Wounds involving more than superficial layers of skin should not be routinely treated. Repeated general skin cleansing of large body areas should not be done unless advised by a healthcare provider. Stop use and ask a doctor if irritation, sensitization, or allergic reaction occurs. Keep out of reach of children. If swallowed, get medical help or contact a Poison Control Center.

Place in Therapy

Dyna-hex 4 is an antiseptic agent for hand hygiene and skin cleansing. Its use in healthcare settings is for reducing bacteria on hands and skin. Caution is needed in infants under 2 months and in patients with allergies to chlorhexidine. It should not be used on deep wounds or large body areas without medical advice.

The FDA has approved Dyna-hex 4 (chlorhexidine gluconate) for use as a healthcare personnel handwash, skin wound cleanser, and general skin cleanser. The product is designed to reduce bacteria that can cause disease. It is meant for external use only and should be used with caution.

Dyna-hex 4 is approved for use by healthcare workers and for cleaning skin wounds. It is not for use on the meninges (the membranes covering the brain and spinal cord) or in the genital area. The label warns that it can cause serious eye injury if it enters and stays in the eye, and deafness if it gets into the middle ear through a perforated eardrum.

This approval means that healthcare facilities now have another option for infection control. However, the product carries serious risks. It can cause severe allergic reactions, including wheezing, difficulty breathing, shock, facial swelling, hives, and rash. It should be used with caution in premature infants or infants under 2 months old due to risk of irritation or chemical burns.

Patients should talk to their doctor before using Dyna-hex 4, especially if they have allergies, sensitive skin, or are caring for an infant. This approval does not mean the product is safe for everyone. Always follow the label instructions and ask your healthcare provider if you have questions.

What this means for you:

Dyna-hex 4 is a new FDA-approved handwash and skin cleanser, but it has serious risks and is not for everyone.

Study Details

Study typeFda approval

PublishedDec 1984

View Original Abstract ↓

Uses healthcare personnel handwash : helps reduce bacteria that potentially can cause disease skin wound and general skin cleansing

FDA approved Dyna-hex 4 (chlorhexidine gluconate) for Healthcare Personnel HandwashFDA approved Dyna-hex 4 for handwashing and skin cleansing.

Study Details

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FDA approved Dyna-hex 4 (chlorhexidine gluconate) for Healthcare Personnel HandwashFDA approved Dyna-hex 4 for handwashing and skin cleansing.

Study Details

Intrawound tobramycin plus vancomycin did not reduce deep infection risk compared with vancomycin alone in high-risk tibial fractures

Adding Antibiotics to Bone Surgery Didn't Lower Infection Risk

Clinical research that matters. Delivered to your inbox.

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