Zinc oxide is a powdered mineral that sits on top of the skin, scattering, reflecting, and absorbing UVA & UVB rays. Although zinc oxide is the safest and most effective active sunscreen ingredient, the best protection from the sun is to seek shade and cover up with clothes and a hat.
Story at-a-glance 1  -. With immediate and antibiotic-free treatment, strep throat can improve in two to five days, up to a week. 2  Immediate treatment of strep throat is very crucial not just for quick recovery, but because an untreated case of strep throat can lead to further complications.
Usually the antibiotic used for strep throat is a form of penicillin (say: peh-neh-SIL-in). To make sure the bacteria go away completely and don't spread to other parts of your body, you must finish all of the medicine. Your doctor will have you take the pills or liquid for 10 days.