White patches could be Psoriasis or fungal You really should get a diagnosis from a doctor first, then decide what you can do for it.
If it's Acne you can buy Grapefruit-Seed-Extract grapefruit seed extract from a health food store. Take 3 drops only and careful not to get in eyes. Masage into face for 1-2 mins. then rinse well. It tingles because it kills germs and fungus.