I'm 65, Korean, and have mature skin. I don't have lots of wrinkles. I am looking for the right TCA % peel for brightening, resurfacing, and tightening. I had melasma in my 40s and 50s. At 65, I still have some sun damage and hyperpigmentation that I want to get rid of with a more aggressive peel. I have used 10% salicytic acid, 25%, 20%, and 30% glycolic acid in the past with some okay results. What TCA % should I use? 20% 25% 30%?