"All I have to say about skin care," Barrymore tells PEOPLE of her flawless complexion, "is vitamin K works!" And don't think you need the actress's superstar salary to nab her beauty regimen. "There's a cream called Dermal K", she says of her choice brand, which starts at $20 for a 2-oz. jar. "And, forget lasers, forget all of it! As a woman in her mid-thirties getting broken capillaries all over her face, oh my God, this is miracle stuff! Dermal K actually gets deep down in there. Kicks those little capillaries' ass!"