Hydro-Star + Salicylic Acid is made for your deepest, under-the-surface spots in mind. They are a combination of hydrocolloid with 1% salicylic acid - a beta- hydroxy acid that helps dissolve dead skin cells to unclog pores.
They are 10/10 for deep pimples that haven'y come to a head. Stick them on your spots 1-3 times per week and they'll help soothe redness and inflammation while bringing your pimple to the surface.