I"m a 50 year old fit woman who eats very healthfully. I take collagen, drink plenty of water, lift weights, am on HRT, etc. I'm not happy with the elasticity of the skin on my body. My arms are aging the fastest bc I used to marathon train in the summer and they have just had a ton of sun exposure over the years. I've had radiesse in my arms as well as Morpheus 8 treatment. What is stronger? I'm considering Laser Resurfacing, would this help with sagging skin? what kind? TY