I have a blistering sunburn what should I do to help heal it faster before my beach vacation. Thanks?

Healing. TAKES TIME (You have SECOND DEGREE BURNS!!) and the LAST thing you need is more BEACH! Cover UP!!! Hope this helps! Dr Z.
Sunburn. You have basically killed the outer cells of your skin. By definition you have a second degree burn. You have to heal, nothing will make it go any faster. Now you are going on a beach vacation. Some words of advice, cover up! Your damaged skin may not be healed, new skin cells will be sensitive. You are at risk for skin cancer!