I have melasma and acne scars/pigment from pregnancy. I have used 4% Hydroquinoin 3 times a week for 3 months. I have been recommended Tri-Luma by another dermatologist. Can I use Tri- Luma immediately after discontinuing use of the 4 % Hydroquinoin or do I need to wait a month in between uses? Also, wondering if the Tri- Luma will Aggravate the acne ? I am also taking 75 mg spironolactone daily. Thanks!