 Early cooling ( within 30 minutes of the burn ) reduces burn depth and pain , but care must be taken as over @-@ cooling can result in <unk> . It should be performed with cool water 10 – 25 ° C ( 50 @.@ 0 – 77 @.@ 0 ° F ) and not ice water as the latter can cause further injury . Chemical burns may require extensive irrigation . <unk> with soap and water , removal of dead tissue , and application of dressings are important aspects of wound care . If intact blisters are present , it is not clear what should be done with them . Some tentative evidence supports leaving them intact . Second @-@ degree burns should be re @-@ evaluated after two days . 
