What Are The Side Effects Of Retinyl?

Hi there, I had rhinoplasty surgery donw to my nose that was very successfull, about 8 months later on a spring day i happen to be sitting in my backyard, it was a glorious day and i thought i ll enjoy 15minutes of sunshine. I was reading a magazine which had a sample of face cream in it containing a... without thinking I applied it to the T section of my face, as the days went past i started to notice those area became darker and more visible. Over time I have tried laser removal at a professional clinic (5 visits in total) couldn t see it improving so i stopped, microdermibrasions help for a short while but doesn t get rid of it. Creams just seem to fad the problem but as soon as I stop using them it comes back and it is quite expensive. I have mediteranien skin, not sure what to do at this point to get rid of this problem. Can you help me ? Kind Regards, Anonymous