if i had read the reviews of others experience i would not have bought this useless thingit just didn't work. such a small unit doesn't seem to have the power or enough suction to suck out blk heads, especially the one caused by serious acne. no matter how long you gonna steam your face, the pore just won't open big enough for this thing to obsorb it. you are expecting the blk head leaks out from the pores if you are expecting this product could help you kick out black heads.I don't recommend this product as it is only an idea, never gonna run into reality