My mom travelled greatly in the heat & never shyed away from sun exposure still her skin was flawless. 3 to 3.5 yrs ago she started swimming & felt her skin started to pigment. so she got a chemical peel done. instead, it started to cause hyperpigmentation. since then she's been getting monthly laser treatments & using Obagi creams. it disappears temporarily but resurfaces after the slightest exposure to sun. can she go in the sun w/o this happening? Cant the h.pigmentation be cured permanently?