I'm new here, but not to skin problems. I believe I've had a bad demodex infestation for at least 4 years now (24 year old female) and I also feel like I've tried everything. I'm willing to give demodex solutions a try but unfortunately I'm really really tight on money right now (I WISH this was sold in stores in the US) so I'd just like to know what products do I absolutely need?? Can I just order the zz cream not the... X-cream? I have some cystic acne on my face, which sometimes become lesions with the tiny white balls that never heal, but no rosacea. Recently however, I've started experiencing hair loss

So, zz cream - yes? how much do I really need and how long will it last me? what is most cost effective purchasing option?
shampoo - yes? how much? how long?
scalp cream - yes? necessary with the shampoo or not?
Also, I am at my wits end here and have resigned myself to NEEDING these products. Unfortunately, money is just very, very tight. If anyone has any coupon codes or ....idk sample discounts they can throw my way...first time customer discount..anything - it would be greatly and sincerely appreciated. I just can't go on like this.
Best,
Lacey