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Alcohol pads, chlorhexidine or barrier wipes?

Alcohol pads, chlorhexidine and barrier wipes do overlapping jobs. Which to use when.

Last reviewed · written by PepPrep · not medical advice

Three products do overlapping jobs on skin, and most people only ever meet the first one.

ProductWhat it doesReach for it when
Alcohol prep pad (70%)The standard antiseptic wipe for skin and vial stoppersAlways — this is the default, and the only one you truly need
Chlorhexidine swabA different antiseptic, without the alcohol stingAlcohol is drying or irritating your skin
No-sting barrier wipeLeaves a thin protective film; it isn't an antisepticSkin is sore from repeated use — used alongside cleaning, not instead of it

The mistake worth avoiding is treating a barrier wipe as a substitute for cleaning. It protects skin; it doesn't disinfect it. And whichever you use, the rule is the same: let it air-dry before the needle goes anywhere near it. Wet antiseptic carried in on a needle is what stings, and these products do their work as they dry.

For vial stoppers specifically, stick to alcohol — it's what the technique everyone teaches assumes, and it evaporates cleanly.

Supplies mentioned: Sterile Prep · Comfort & Safety

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