Should I Start Preventing Wrinkles with Retin-a at 19?

Actually, not only preventing but also "reversing" as I do have a wrinkle on my forehead and laugh lines that really bother me when I wear makeup. I started using retin-a about 3 weeks ago and so far my skin is fine since i am using a low dose. I had a bit of flaking but it was reasonable. My question is, is it a good choice to start preventing wrinkles at 19 with retin-a or am I too young?

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