All the different treatment options are not permanent. Why not? Because our skin is a live tissue and will continue to age with time. So why bother to do treatment? Because it is like exercise. We exercise to keep our muscle and heart healthy.
Laser and other treatments mentioned are what I term as "Skin Exercise". These treatments keep the skin metabolism up and maintain it's youthfulness.
By the way, the pre- and post-treatment (laser or otherwise) skincare regime are very important and would affect the result significantly. Poor skincare might even result in complication such as post-inflammatory hyperpigmentation. Sun avoidance and sun protection would the number one concern.
Have a great weekend and an enjoyable journey in looking good & feeling great. Don't be too stressed!