Skin Tightening If you have loose, saggy skin as a result of pregnancy, weight loss or ageing then you need a Skin tightening session at Dr. Jagdeep’s Clinic. Radio Frequency is one of the most talked about treatments around! This treatment tightens the skin using Bi-polar radio wave frequencies which vibrate the water in the dermis causing friction and heat which causes the collagen to contract and become more compact leading to a dramatic tightening and lifting effect.