Will Retin-A help already damaged skin? How long would it take to see results? (Photo)

I suffered severe skin damage in a tanning bed situation ( primarily uva bed in a series of 7 sessions in a month's time). My skin aged 20 years overnight and it has only gotten worse, including brown spots, sandpapery texture, wrinkles on the neck, loss of elasticity and enlarged pore size. I am 54 and this happened about 1 1/2 years ago. I started retin A about 6 weeks ago and have seen no visible improvement.

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