That white gel bubble demonstrates hydrocolloid healing. The weepiness of your blister is combining with the dressing to form a perfect healing environment.
Hydrocolloid blister plasters, like Compeed, are great. Here's why BlisterPod introduced their own brand, with better packaging and instructions-for-use.
A hydrocolloid dressing is brilliant at getting a certain type of blister to heal. So why do so many people hate them? Avoid these common mistakes.