Well, first let’s talk about how pimples form in the first place. Acne is a complex skin condition that has many contributing factors, influences, and triggers. For example, genetics, diet, lifestyle,skin care products, makeup, and stress levels can all play a role in developing or worsening acne. But a basic explanation as to why a zit forms is this: “When cells within the oil glands stick together and block the pores, oil builds up leading to inflammation,” says board-certified dermatologist Joshua Zeichner, M.D. From there, it may form into the various types of acne, like blackheads, whiteheads, papules, pustules, and cysts. Remedies for neck acne. Topical treatments for neck acne are the same as for facial or body acne. However, you’ll want to be extra careful with the delicate skin. “The neck is a unique area of the body because the skin is thinner and more sensitive than the face.