It has microstructures (microneedles) that infuse wonderful ingredients such as niacinamide and hyaluronic acid directly into the acne. For a pimple that already turned into a head, it vanishes/heal after two uses.
Although it helps heal a pimple a little faster, it does not happen overnight contrary to its claims. It doesn’t flatten a cystic pimple overnight as well.
FULL REVIEW: https://stylevanity.com/2019/02/acropass-trouble-cure-review.html