Acne acne here, acne acne there...

The weather has been quite hot lately, so i have to be more hardworking to apply thick sunblock before i bask under the big bright sun outside. However, i suddenly noticed my face has been having few acne spots ever since i started to use the sunblock, so i pretty wonder is the sunblock triggered the acne or the acne is triggered by excessive sweating due to the hot weather? I ain't sure the reason but luckily i still do not need acne scar removal now as my acne would disappear within few days without leaving any visible scar!