Lice/ticks, hair regrowth suggestions?

Went and visited my mare this past week and she is in horrible shape. I'm a student and thought leasing her out to a family I know would be the best thing for her.. boy was I wrong. Ticks and lice all over her mane, rubbed/bald patches all over her face, chest, and barrel. I don't have pictures (wish I did), but I'm looking to bring her home ASAP to get her cleaned up. I will NEVER lease a horse out again.

-Is there a reallllly good lice shampoo/regime anyone can suggest to me?
-How do I remove the ticks (I refuse to use a lighter)?
-What is the best regime for stimulating hair growth? I know MTG is an excellent product, but she is completely bald in some areas.. it's just skin, no hair.

Thanks ahead of time for suggestions.

Try biotin supplement. I bought State Line Tack hoof and coat for like $17 on horse.com (because I am cheap) and it actually worked really well! I was just going to say MTG but I guess you have already considered it. It wouldn't hurt to try. Don't know about the lice, honestly didn't know they got lice!
You want to get the entire tic out, and NOT leave the head because it gets swollen sometimes, gross, makes pustules, its a whole thing. You just gotta press up against the skin and pinch the whole tic out. Then you put it in rubbing alcohol, hit it with a hammer, whatever you want so long you have poisened it or cut it in half. I feel your pain with the tics, I am from the lovely swampy tic infested shores of VA! It would be nothing to see 8 new tics in one day, and after a trail, maybe 10! Gross! Make sure there aren't a lot of reported lyme disease in your area!!! You can't see the bulleye on a horse's black skin!!!! Are you sure she doesn't have some kind of fungus with the hair loss?

I am sorry to hear your lessees were negligent with YOUR horse. There are plenty of people that are competent leasers though, should you change your mind in the future. I leased when I was young, and that horse glowed!!

Omega horse shine. You can get it via Smartpak.com in a daily unit dose kind of thing... Biotin plus helps too... Smart Bugoff can help keep those nasty things from biting too!

Prob a little late to the party but "Buzz off" is a great product for lice and ticks. It's a topical you put down the spine and repeat after 2 weeks. Takes care of the problem. Lice can be transfered from horse to horse but not horse to human, cow, dog, chicken or anything else. They are host specific.

I had something similar happen to me. Your fly sprays have lice killing abilities. I haven't tried this but supposedly if you take dishwashing liquid and put on a cotton ball and lay it against the tick for a couple of mins it will withdraw and be stuck to cottonball when you pull it away. I'm going to try this if I find a tick. I bathed mine in iodine based shampoo, just to be on the safe side.

Try 100% Organic Raw Coconut Oil. You can feed 1 to 2oz in the feed AM & PM. It will help repel pests, boost the immune system, and promote healthy skin, shiny coat, mane and tail. I is a natural antibacterial, antifungal, and antioxidant. For the exterior, it will absorb into the hair to condition and shine and can be used on the hooves as well. For any bare spots, hot spots, abrasions, or cuts, it will form a chemical barrier and promote healing.

100% Organic Hemp oil (0% THC non psychoactive) will promote skin, coat, mane, tail and hoove health as well and can be fed the same as coconut oil. Best if used together. The hemp oil will promote stronger hair growth. It is has Omega 6 and omega 3 in a 3:1 ratio, the best for mammals. It also contains Omega 9 and GLA. The omega 3 and GLA help to reduce or eliminate inflammation. Google hemp oil for horses and coconut oil for horses to read for yourself what everyone else is finding out. It isn't snake oil, it's science. We use it on a rescue horse and he is coming around nicely. We will be taking pics every friday to chart his improvement. We have already seen the positive results on several other horses who were in less than great shape. Hope this helps!