BEST SELLER: Natural Path Silver Wings Colloidal Silver 500 PPM is our best seller. 50 times stronger than 10 PPM solutions. Higher PPM strength offers convenience of less dosages per day. Properly prepared pharmaceutical grade colloidal silver is safe to use in higher PPM strengths and concentrations. Your Natural Path Silver Wings from Selfcare Plus comes with a free and convient dropper bottle including a 20mm removable dropper cap. Take your powerful colloidal silver with you. WHAT IS COLLOIDAL SIVER? Is a dietary liquid mineral supplement containing a mixture of ultra pure water and ultra fine silver particles WHAT IS PARTS PER MILLION (PPM)? PPM is the number of silver particles per serving yields greater concentration and increased immune support. Silver Wings offers products in 50,150,250, and 500 PPM. IS COLLOIDAL SILVER SAFE? Yes, due to the unparalleled silver particle size, Silver Wings Colloidal Silver can be safe for the whole family. Properly prepared pharmaceutical grade colloidal silver is safe to use in higher PPM strengths and concentrations. It is easily absorbed and readily available for your body’s immune support needs. AMBER COLOR IS KEY: Silver Wings is made from naturally occurring elemental Silver, which has a color. The higher PPM, the darker the amber color colloidal silver suspension (liquid) will appear.