Ivermectin can be applied directly to skin, and is absorbed. I put just a tiny bit on a cotton ball and applied it to my scalp where I had sores coming out. It seemed to help get the buggers out. It takes awhile to soak in and show any results.
DO NOT put too much of it on our scalp. It is absorbed through the skin into your body, so never use more than you would in one regular dosage for your body weight.
Put it on a cotton ball and just dab it on, or use an eyedropper to put it on your scalp and rub it in. It will also be absorbed through your fingers if you don't wear gloves.
DO NOT put albendazole on your scalp or anywhere on your skin, only Ivermectin.