There is described the use of silica from 1% to 100 % by oral intake ofGeothermalAmorphous 100 % natural Silica or any other types of silica SiO2 to improve,and change, the pHfor humans and animals. Silica can be used to protect against cancer and toimprove and helpimprove from cancer oral intake from 1% to 100%. Silica helps expel metalsfrom the body.Silica as a cream can remove stretch marks on the skin. Silicon dioxide from1% to 100% insolution can be used against candida and candida overgrowth, increase hairgrowth and preventhair loss; and in a spray solution can be used to get rid of bed bugs.