Is it normal for skin on the head of the penis to turn white and wrinkly(slight pain)after genital wart treatment? ive been applying podophyllotoxin

Yes: There are some skin changes that will temporary occur after using this medication for the chemical treatment of genital warts

Here are some ...: What you've observed on the glans penis is normally expected but unique since the healing ability widely varies, evolves, and matures over a variable duration among the life of all individuals. So, time & patience are what you need. If still anxious, seek timely evaluation & counseling.