your case is like me, go to see "chung e" this is work for me. there is not works for "site e" that make your face very dry and painful, and now there is only one or two on my face.
there is two years ago, exactly i forgot the name. my "chung e" is locate at Wan Chai, Lockhart Road (is the corner of the street) near the Wing Wah (only one "chung e" here, you can try to find him. he is not bad, he can boil "chung york" for u, but you must wait for an hour, hope u well.