Is the Application of a Cooling Gel Necessary Before IPL Skin Rejuvenation?

Using a clear gel with the IPL often not only cools the skin, but also reduces reflection of the IPL waves from the skin. This makes the treatment more efficient.

Whether or not gel is used really depends upon the IPL device.  All systems use some form of cooling to protect the skin.  Some have built in cooling and do not require the gel.  Some need the gel to help diffuse heat and cool the skin.