Removing radioactive contamination from clothing and skin
Use this when: Authorities advise decontamination or you have been outside where fallout or radioactive contamination may be present.
Current official instructions for your area take priority. UK Ready is an independent information site, not a government service. This guide is written from the official sources listed below; it has not yet had a specialist review. Sources checked 13 October 2026.
ACTION SUMMARY
- 1Stay near your entry or washing area rather than spreading possible contamination around the building.
- 2Carefully take off outer clothing and shoes. Avoid shaking clothing or touching its outer surface.
- 3Put these items and the face covering in a plastic bag or another sealable container.
- 4Shower using warm water, soap and ordinary shampoo if available.
- 5Wash gently. Do not scrub skin or wounds.
- 6Seal used wipes or cloths away from people. Put on clean clothes stored indoors.
In detail
Get inside first. Cleaning removes radioactive material from your body and clothes; it cannot undo radiation exposure already received. Being exposed to radiation does not automatically mean a person is contaminated or dangerous to touch.
Follow the UKHSA sequence
- Stay near your entry or washing area rather than spreading possible contamination around the building. Put on an immediately available clean face covering if you have one.
- Carefully take off outer clothing and shoes. Avoid shaking clothing or touching its outer surface. Avoid pulling contaminated items over your face; cut them off if necessary and feasible.
- Put these items and the face covering in a plastic bag or another sealable container. Seal it and keep it away from people and pets.
- Shower using warm water, soap and ordinary shampoo if available. Do not use hair conditioner. Keep eyes and mouth closed while washing your head.
- Wash gently. Do not scrub skin or wounds. If you cannot shower, wash exposed areas at a sink; if that is unavailable, use a damp cloth or moist wipe.
- Seal used wipes or cloths away from people. Put on clean clothes stored indoors.
UKHSA reports that removing outer clothing can remove up to about 90% of radioactive material. That does not mean it removes 90% of the dose already received or makes someone completely free of contamination.
Mains water is normally suitable for radiation decontamination under UKHSA guidance. Follow any separate local instruction if there is also chemical contamination or a restriction on using the water. Do not confuse permission to wash with permission to drink.
Helping someone else: Use waterproof gloves and a face covering if available, cover your cuts, and wash your exposed areas again afterwards. Protect privacy and keep people warm. Do not separate a child from a necessary carer simply because contamination is suspected. Tell responders if you cannot clean safely or have a serious injury.
Pets: Bring pets already with you indoors. If contaminated, wash them using soap or shampoo and water when safe. Keep them away from household members until cleaned if cleaning is not possible. Do not go outdoors to search for a missing pet during a sheltering instruction.
Official sources
This guidance is an editorial explanation of official UK advice. Always follow instructions from the authorities.
- UK Health Security Agency: What to do in a radiation emergency Covers: UKPublished: 2024-09-10Checked: 2026-10-13
- UK Health Security Agency: How to remove radioactive material from your skin and clothes Covers: UKPublished: 2024-09-10Checked: 2026-10-13
Adapted Crown copyright material is used under the Open Government Licence v3.0. No government endorsement is implied.
Common questions
Does a face mask stop radiation?
A face covering can help reduce inhaling particles in some circumstances. It does not shield you from penetrating radiation and cannot replace a suitable shelter.
Does a shower reverse radiation exposure?
No. It can remove radioactive material on the body. It does not undo a dose already received. Removing outer clothing can greatly reduce contamination but does not erase exposure.
Related guides
- Nuclear and radiological incidentsSheltering from radioactive fallout
- Nuclear and radiological incidentsStable iodine, radiation exposure and medical help
- Nuclear and radiological incidentsFood, water and recovery after radioactive contamination
- Family and access needsPets, neighbours and community support