👉 Activation pimples, also known as cystic acne, are a type of acne characterized by deep, inflamed lesions that form when hair follicles become blocked with a combination of dead skin cells, sebum (oil), and bacteria. When these blockages occur deep within the skin, they can lead to the formation of pus-filled cysts. The inflammation and infection associated with activation pimples cause significant pain and discomfort, often resulting in larger, more painful lesions compared to other types of acne. This process typically involves the hair follicle becoming blocked, leading to bacterial growth and subsequent inflammation, which can cause the characteristic swelling, redness, and pus formation.