Let me share with you something that will solve your hair loss, and help a bit with your acne. You must wash your hair every single day of your life and when it's hot and you're sweaty you must wash it twice a day. Never, ever go to bed with a sweaty scalp. The sebum in your scalp acts like a depilatory when it's left on the scalp. Look at people who are losing their hair, it's always shinny and greasy and look at the scalp of people that don't lose their hair, it's always clean and dry. You can use any shampoo. If it gets too dry use a dab of aveeno daily moisturiser and you have just save your hair. It will not grow back but it will stop further loss. Try for 90 days and you will never stop doing it.