why can't i apply toppik to donor site hair transplant why can't i apply toppik to donor site hair transplant If you've recently undergone a hair transplant for your beard and mustache, you may be wondering why you can't simply apply Toppik or other hair fiber products to your donor site. While hair fiber products like Toppik can be a temporary solution to mask thinning hair or bald patches, it's important to know how they interact with hair transplant procedures.…

