Product Material: aluminum alloy + volcanic stone + plastic Size: 2.56*4.2*2.56CM Quantity: 1 piece Package content: 1 * oil-absorbing ball 1.[OIL ABSORBING BALL ROLLER]: Naturally porous & absorbent, volcanic rock is natures safest, most effective oil absorber. Roll the oil absorbing rock over skin to soak up oil & reduce shine.Use it before applying your facial sheet mask for best results. 2.[Massage and mat face]: Rolling the stone roller across your skin feels heavenly, like a mini facial massage. Ditch your jade roller and use our 2-in-1 Mattifying face roller for oily and acne prone skin 3.[SMALL AND PORTABLE]:Its appearance is very small, you can put it in your bag and use it at any time, and it does not take up a lot of space, You can even hide it in your palm and remove the oil quietly without embarrassment. 4.[LESS WASTE THAN BLOTTING PAPER]: Unlike blotting papers for oily skin that are used once and thrown out, this oil-absorbing roller is reusable. To clean, twist the rollers ring to unlock, and pull out the stone. Wash with a gentle cleanser, rinse, and air-dry before locking it back in. 5.[THE BEBEFITS OF VOLCANIC STONE FACE ROLLER]: There are many small pores on the surface, just like pores on the skin. Soaking in essential oils can gradually absorb essential oil components.Combined with the modulated essential oils, it can solve many annoying skin problems.