Horsetail contains minerals that help with weak & brittle fingernails. Silica in Horsetail helps hair growth & strength. Also helps with hair loss, dandruff & split ends. Anti-bacterial, anti-septic, & anti-oxidant agents as well as silica in Horsetail give it the ability to heal wounds, rashes, burns, skin lesions & acne. Silica helps form collagen, important in the development & maintenance of healthy connective tissues. It is used in anti-aging, anti-wrinkle products.