After eight weeks, the women using Pro-x showed a significant improvement in the appearance of their wrinkles compared with those using tretinoin.
8周后，使用Pro - x的女性与使用维他命a酸的相比，皱纹情况有明显好转。
2
OBJECTIVE To establish a method of tretinoin quality controling.
目的建立维甲酸凝胶的质控方法。
3
In the safety study, a 52-week open-label trial, Dr. Wortzman and colleagues reported clindamycin-tretinoin gel to be safe and well tolerated in 655 patients (mean age, 20 years).