It may sound futuristic, but you can actually fight acne by showing it the light. “Non-laser light therapies can be very effective for acne,” says Krant. “They’re delivered in different ways, such as blue or red light, IPL (intense pulsed light over a spectrum of several wavelengths), or photodynamic therapy (light treatments boosted by the use of a sensitizing chemical applied to the skin first). They work by killing the bacteria that causes acne in the skin, heating and shrinking the superficial blood vessels in the skin that cause redness and inflammation, or shrinking the oil glands.” For an at-home option, TRIA’s Skin Perfecting Blue Light may help you achieve clearer, brighter skin by zapping bacteria deep within the follicles. The handheld device can be used to treat mild to moderate acne without irritation. ($245; TriaBeauty.com).