Recommended ways to use Slimface ? ?Cleanse your face and ensure that there is no skincare products on your face or skin and begin your treatment. ? Instant results after rolling in just 30 seconds Use SerumAnge while you're in the shower or bath to optimize the negative ions production in your face and body. ? Roll for 5 minutes. ? Reduce body aches and leg or arm heaviness. Benefit ? Reduce body aches and leg or arm heaviness. ? Reduce fatigue and swelling ? Pain management for arthritis and orthopedic injuries ? Reduce water retention naturally ? Enhances post-exercise recovery ? Reduce acne, cellulite and eczema