Home PH adjustment is fine. Many items do the trick. However as noted by folks most are not stable. Vitamin C is. If you are going to use ascorbic acid, Vitamin C get PURE crystals. Never cause a problem. People buy cheap vitamins with tons of binders and crap you don't want or need. Spend a few bucks and feed your immune system while you adjust your ladies PH. For human health SLOWLY increase dosage well beyond recommendations. Serum level goes way up, keeping you healthy with great skin. Can't OD like other Vitamins. Body flushes not stores extra. So raise dose slowly to get best health results. I do 20,000 units a day huge benefits!