classic hydro-stars and hydro-star clear are made with the same 100% hydrocolloid formula that helps shrink pimples, absorb fluid, and reduce redness in 6 hours. while classic stars come in a cute bright yellow, clear stars offer more discreet coverage thanks to an invisible finish that blends into skin. you might like classic stars when you want to have fun with color and hydro-star clear when you’re feeling more lowkey.