If they don't get expert help there is a good chance. Of course, 2nd degree burns are more severe than the 1st degree but not as severe as 3rd degree burns. Generally they are caused by sunburn or, god forbid by chemical exposure.
Now unlike 1st degree burns, the outer skin here is destroyed too in addition to damage to the skin. However, it does not destroy the second layer of the skin, it just gets damaged.
After the damage on the outermost layer of the skin, this second layer of skin is revealed. This layer of course will turn red or pink. Now blisters are commonly formed in these types of burns, they do help the experts in identification sign for the burns. Of course, medical help is very very important.