Sorry for this profoundly strange question! I hope one of you guys will be able to give me some advice! We have horrible, hard, alkaline tap water at home that really dries my skin. Diva-ish as it sounds I have taken to rinsing off my cleanser with thermal waters from France and Italy in an aerosol can. I found lovely, low pH ones (5.5 and 4.5) which really make a huge difference to my easily stressed skin.
I was wondering, would it be possible to add a few drops of Lactic Acid to a spray bottle using distilled water in order to create a simple water spray of pH5.5 to wash off my cleanser with? Distilled water is around pH7. I would, of course, use a pH meter to ensure the correct mix. This would be used up within a week so I don't plan on adding preservatives. I was wondering if the LA dilution would be so minuscule that I could use this mixture liberally to wash my face 1x per day without any fear of irritation? (I am leaning towards LA due to its moisturising properties as opposed to Apple Cider Vinegar.