... the cadulity, improve the blood circulation and metabolism, tighten the skin, dispel the wrinkles, meliorate the fleck, whiten the skin, meliorate the whelk, balance the grease incretion and improve the ... one course, the first 8 times should be two times one week, the latter 4 times should be one time one week ... 2. A vast range of applications; Many in one machine.3. Safe and effective for all skin ...