... Hot and Cold Hammer 1.Promote Relaxation,Shrinks Pores, 2.Increase Absorbency,Smooths Wrinkles, 3.Tighten Pores,Soothes Skin. ML-600 ULTRASONIC HOT ... the hammer head reaching different temperatures (one hot, one cold) simultaneously. The hot side of the hammer relaxes and opens ... oil and bacteria.Increases AbsorbencyBy opening the pores, the hot hammer aids the absorbency of nutrients--such as through ...