Product description ▲Before using, use a facial steamer (or hot towel , blackhead removing liquid) for 5-10 mins to relax and open up your pores. ▲Moving while sucking , don’t push too hard on your skin, don’t leave it on one spot longer than 3 seconds ,in case of bruise and hickey . Please start at the lowest setting and keep it working in 2 mins at the first time because this thing is pretty powerful. ▲Microcrystalline with skin exfoliating function, Dry skin use it once a week, oily skin and combination skin use it twice a week. ▲Please tolerate the light bruising and redness. It’s completely normal in the beginning! But it will fade 5-10 mins later. ▲Use a cold steamer or cold towel and moisturizer to shrink the pores.