hi doc.. im 22 yrs old and im suffering from pimples, white & black heads. im having regular facial cleaning (every 2-3weeks), and use toner, acne astringent and tretinoin regularly. it seems that my treatment hasn t stabilize my face yet. ive been on that treatment for 5-6 months already. i wonder if it s okay to put some clindamycin in my astringent and if i should continue using tretinoin, since ive also read that using antiseptics for too long can lead to yeast infections? thank you... btw, i have irregular sleeping habits too.