Learn How to Prevent Low-Temperature Burns From Hand Warmers

What is a low-temperature burn?

Guidance from the Gangnam District Office Policy Public Relations Office, based on Policy Briefing material, explains a low-temperature burn as skin damage from long exposure to heat of around 40 to 50 degrees. It also points out that, unlike ordinary burns, the symptoms are hard to notice right away. Red spots and pigmentation appear on the skin, sometimes with itching or blisters. It says that even if the burned area looks small, it can be a second- or third-degree burn that has damaged the subcutaneous fat.

Korea Consumer Agency Consumer24 material says hand warmer burns mostly occur at relatively low temperatures of 40 to 70 degrees, during long contact. It also explains that because pain is felt late, burns easily get worse. This material cites Korean Burn Society data that burns can occur even at 40 to 45 degrees after 1 to 2 hours of contact.

In numbers, in the December 2018 Policy Briefing report, the Korea Consumer Agency said that hand warmer-related hazards reported over the previous three years totaled 226, of which 87.2% were burns. Second- and third-degree burns accounted for 92.2% of the burns. The 2015 Consumer24 material said that of 107 hand warmer hazards reported from January 2011 to September 2014, 100 (93.5%) were burns. The two sources count different periods, so it is better not to stitch them together.

What should you check on a hand warmer package?

Packaging labels should come first because surveys often found problems with labeling. According to Consumer24, 25 of 30 powder-type hand warmer products (83.3%) did not comply with labeling requirements. Four Chinese-made types sold on social commerce had no Korean labeling, and 2 products were labeled as exceeding the maximum temperature standard (70 degrees or lower). In the 2018 report as well, half of the hand warmers surveyed had inadequate precaution labeling.

In the Consumer24 material, 11 products had problems with the self-declared safety confirmation marking. Four had the mark but no notification certificate number, and 7 had neither. That survey is old, so it does not mean products on sale now are the same. Still, the standard of checking that the package has both mark and number remains usable today. For each product's method of use and temperature, follow the precautions the maker prints on the package first.

How should you use hand warmers at a campsite?

There are five rules to follow at a campsite, compiled from the Korea Consumer Agency and Gangnam District guidance.

• Put it on over clothing, not on bare skin. Gangnam District guidance also says to use it over clothing so it does not touch the skin.
• Do not hold it on the same spot for long. This is a precaution Consumer24 gave.
• Do not use it while sleeping. Inside bedding such as a comforter, the temperature can rise higher than expected.
• Do not use it together with other heating appliances such as electric mats or hot water mats.
• Keep it out of reach of infants.

Gangnam District guidance says the risk is particularly high when a hand warmer that heats up to 70 degrees is continuously exposed to skin for more than 2 hours. That figure shows the point where risk rises; it is not a guarantee that things are safe before then. As Consumer24's example citing the Korean Burn Society shows, burns can form after 1 to 2 hours even at 40 to 45 degrees, so keeping it off bare skin matters more than timing.

In winter camping it is easy to pile a sleeping bag, blanket, or electric blanket over a hand warmer. Do not put it inside bedding or use it together with other heating appliances. Being away from a stove does not make combining it with a hand warmer safe.

Which hand warmer candidates can you look at?

I checked two products from Dabong Store, which is marked as Dabong Industry's official shop. The site operator is Shinwoo Distribution Co., and the product maker is shown as Dabong Industry Co. The table below shows the information displayed on the product pages. Check the maximum temperature, safety confirmation number, and precautions for use again on the package you receive.

Both products were checked on October 8, 2026. Check price and stock on the links.

It suits people who want to stick one on over clothing or put one in a pocket to warm their hands during outdoor activity in the daytime. It is easy to use if you can read the package labeling and follow the maker's precautions. Be aware that an adhesive type is fixed to clothing, so it is easy for it to stay on the same spot for long.

It does not suit people who want to use one in bed or whose skin sensation is reduced. The Korea Consumer Agency says infants and people with diabetes should avoid using one, and Consumer24 says older people and people with medical conditions should be especially careful. Such people should first think about keeping warm with cold-weather items such as clothing and warm gloves instead of hand warmers.

Who should you consult if you have symptoms?

If the skin where you held a hand warmer turns red or changes color, itches or stings, or blisters, it may be a low-temperature burn. As the Gangnam District guidance explains, even if the visible area is small, damage can reach deep into the skin, so do not judge the condition yourself and consult a medical professional. That it is a burn that is easy to miss because the pain is not great is the shared warning of the sources.

If symptoms are severe or suddenly get worse, call 119 for guidance. At a campsite, remember when you took the warmer off, where it was placed, and the product name on the package, which makes it easier to describe when you get advice. While using one, follow the precautions on the hand warmer's package and check from time to time whether it has touched bare skin.