That may be true, but I noticed when I switched to my brand new anti-aging LightStim, the one with yellow bulbs, that it feels livelier than the old one. The reasons could be anything from my imagination to the difference in all red vs red and yellow light - or I could be right in thinking that my old model was getting tired.
My only concern is that uneven application over time may have made my face uneven. The jowl on the left seems different than the one on the right. Somebody mentioned it, and now I'm self-conscious. My husband assures me that face isn't crooked - my neck is.
