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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.
| Product | What it does | Reach for it when |
|---|---|---|
| Alcohol prep pad (70%) | The standard antiseptic wipe for skin and vial stoppers | Always — this is the default, and the only one you truly need |
| Chlorhexidine swab | A different antiseptic, without the alcohol sting | Alcohol is drying or irritating your skin |
| No-sting barrier wipe | Leaves a thin protective film; it isn't an antiseptic | Skin 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