Rubbing alcohol: what it is, which strength to buy and how to use it safely
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- 70% isopropyl rubbing alcohol. Best for: Comparing a common external-use bottle for an appropriate first-aid or small-item task. See options on Amazon
- Individually wrapped alcohol prep pads. Best for: Cleaning skin before an injection or wiping tools on the go. See options on Amazon
- 70% ethyl rubbing alcohol. Best for: People who want an ethyl alcohol option for skin and small items. See options on Amazon
- Fine-point tweezers. Best for: Removing splinters and dirt from minor wounds. See options on Amazon
- Sterile saline wound wash. Best for: Rinsing cuts when running water is not close by. See options on Amazon
- Swimmer's ear drying drops. Best for: Swimmers whose healthcare provider agrees that ear-drying drops are suitable. See options on Amazon
What is rubbing alcohol?
Rubbing alcohol is a name for alcohol products meant for use on the skin. Poison Control says the most common form is 70% isopropyl alcohol (isopropanol), with the other 30% water. It is colorless with a strong alcohol smell, and it is the active ingredient in the alcohol swabs used to clean skin before an injection. The word "rubbing" was added to stress external use and to set it apart from drinking alcohol.
CDC's disinfection guideline notes that in healthcare, "alcohol" means two compounds: ethyl alcohol and isopropyl alcohol. Both kill common bacteria quickly and act against fungi and many viruses, but they do not destroy bacterial spores. Isopropyl alcohol also does not work against the nonlipid enteroviruses.
Which strength to buy
More alcohol is not better for germs. CDC explains that alcohol kills germs by breaking down their proteins, and this happens faster when water is present, so pure alcohol is less effective than alcohol and water mixed. Germ-killing power drops sharply below 50%.
| Strength | What sources say | Good for |
|---|---|---|
| Below 50% | Activity drops sharply (CDC) | Do not assume reliable disinfection from a low concentration |
| 60% to 90% | Best germ-killing range (CDC) | Compare an appropriately labeled product for your intended use |
| 70% isopropyl | The most common rubbing alcohol (Poison Control) | Everyday first aid kit and household use |
| Higher strengths | Less effective as disinfectants and more irritating (Poison Control) | Buy only when a specific job calls for it |
Disinfection is not sterilization. CDC says alcohol does not destroy bacterial spores and is not recommended for sterilizing surgical equipment. It evaporates quickly, so follow the selected product's application and contact-time directions rather than assuming a quick wipe always works.
Everyday uses
- Cleaning first aid tools. Mayo Clinic's steps for cuts and scrapes say to remove dirt with tweezers cleaned with alcohol.
- Small household items. Poison Control says it can be used to clean and disinfect thermometers, computer keyboards and phones. Check the item maker's cleaning instructions first: CDC notes alcohol can damage some plastics, rubber and lens mountings.
- Skin before an injection. Alcohol swabs are made for this; follow the directions your clinician or the medicine label gives.
What about cuts? Many people reach for rubbing alcohol for minor cuts, but Mayo Clinic's first aid advice is to rinse the wound under running water, wash around it with soap, then apply a thin layer of antibiotic ointment or petroleum jelly and cover it when appropriate; its guide says a very minor scrape or scratch may not need covering. Use alcohol on your tools rather than in the wound. Our saline wound wash and antibiotic ointment guides cover the products for those steps.
Rubbing alcohol in the ear
Ear-drying drops deserve different advice from household surface cleaning. CDC recommends asking your healthcare provider about ear-drying drops after swimming. Do not use them with ear tubes, a punctured eardrum, swimmer's ear or ear drainage.
Do not put household rubbing alcohol straight into your ear or use it to treat a painful ear. Check with a clinician about the appropriate product and its directions. CDC recommends tipping your head so water drains, drying your ears with a towel and avoiding objects such as cotton swabs in the ear canal. Seek medical advice for ear pain or drainage.
Hydrogen peroxide vs rubbing alcohol
Hydrogen peroxide and rubbing alcohol are different active ingredients, not interchangeable names. Compare the product's stated use and directions. For wound cleaning, Mayo Clinic recommends running water, soap around the wound and alcohol-cleaned tweezers for debris; it specifically advises against hydrogen peroxide in the wound. Do not assume a household cleaner belongs on an open cut. Our hydrogen peroxide guide explains that product separately.
Safety rules
- Never drink it. Isopropyl alcohol is not the same as drinking alcohol. Swallowing it can cause vomiting, bleeding in the stomach and intestines, low blood pressure, shock and coma.
- Do not use it to bring down a fever. Poison Control says alcohol-soaked towels or blankets do not reduce fever and can cause poisoning, because it is absorbed through the skin and inhaled. It describes a 2-year-old who needed intensive care after being soaked with about 4 oz.
- Keep it from flames. Despite the water content it will burn, reaching above 1000 F. Use it only in well-ventilated areas.
- Store it safely. Keep it cool, ventilated, up and out of children's reach, and never move it into another container.
- Skin. Use only small amounts according to the label; Poison Control notes dryness and minor irritation are possible. Stop if it irritates your skin.
For accidental exposure, Poison Control says not to induce vomiting. Move to fresh air after inhaling fumes; rinse an eye exposure with plenty of room-temperature water for 15 to 20 minutes after removing contact lenses, or a skin spill for at least 15 minutes after removing contaminated clothing. Contact Poison Control for specific advice. Call 911 immediately if someone collapses, has a seizure, cannot be awakened or has trouble breathing.
What to look for when you buy
70% isopropyl rubbing alcohol
Best for: Comparing a common external-use bottle for an appropriate first-aid or small-item task
70% is the most common rubbing alcohol and sits inside the 60% to 90% range CDC gives as most effective for killing bacteria.
Watch out: Flammable and poisonous if swallowed. Keep it in its original bottle, away from heat and children. Follow its labeled use and contact time, and check the item's cleaning instructions.
See options on AmazonIndividually wrapped alcohol prep pads
Best for: Cleaning skin before an injection or wiping tools on the go
Poison Control notes isopropyl alcohol is the active ingredient in the swabs used to clean skin before injections, and single pads travel without a bottle to spill.
Watch out: Not for open wounds. Follow your clinician's directions for injection care.
See options on Amazon70% ethyl rubbing alcohol
Best for: People who want an ethyl alcohol option for skin and small items
CDC lists both ethyl and isopropyl alcohol as germ-killing alcohols, with the best range at 60% to 90% in water.
Watch out: Like isopropyl rubbing alcohol, it is for external use only, never for drinking, and it is flammable.
See options on AmazonFine-point tweezers
Best for: Removing splinters and dirt from minor wounds
Mayo Clinic's cut and scrape steps call for tweezers cleaned with alcohol to remove debris, so a pair belongs next to the bottle.
Watch out: See a healthcare professional if you cannot remove all the debris.
See options on AmazonSterile saline wound wash
Best for: Rinsing cuts when running water is not close by
Mayo Clinic's first step for cleaning a wound is rinsing, not alcohol. A sealed saline spray is a clean rinse for a kit or car.
Watch out: Deep, dirty or infected wounds need medical care, not just a rinse.
See options on AmazonSwimmer's ear drying drops
Best for: Swimmers whose healthcare provider agrees that ear-drying drops are suitable
CDC recommends checking with a healthcare provider about ear-drying drops after swimming. Compare a product labeled for that use and follow its directions.
Watch out: CDC says not to use drying drops with ear tubes, a punctured eardrum, swimmer's ear or ear drainage.
See options on AmazonQuestions people ask
- What is rubbing alcohol made of?
- Most often 70% isopropyl alcohol and 30% water. Some rubbing alcohol is made with ethyl alcohol instead; check the label.
- Is higher strength rubbing alcohol better for disinfecting?
- No. CDC says alcohol kills germs best at 60% to 90% in water, and Poison Control says higher concentrations are less effective as disinfectants and more irritating.
- Can you put rubbing alcohol in your ear?
- Do not pour household rubbing alcohol straight into an ear. Ask your healthcare provider about a suitable ear-drying product. CDC says to avoid drying drops with tubes, a punctured eardrum, swimmer's ear or drainage.
- Is hydrogen peroxide rubbing alcohol?
- No. These are different active ingredients with their own product uses and directions. Neither name means a product is suitable for an open wound.
- What if someone swallows rubbing alcohol?
- Use the webPOISONCONTROL online tool or call Poison Control at 1-800-222-1222 right away. Call 911 if the person is hard to wake or has trouble breathing.
Sources
- No, you can't drink rubbing alcohol (poison.org), Poison Control, National Capital Poison Center
- Chemical Disinfectants: Guideline for Disinfection and Sterilization (cdc.gov), CDC
- Preventing Swimmer's Ear (cdc.gov), CDC
- Cuts and scrapes: First aid (mayoclinic.org), Mayo Clinic
- First aid guidelines (poison.org), Poison Control, National Capital Poison Center