Silica (from Horsetail Extract) 40 mg †. Horsetail Extract (Equisetum arvense & Equisetum hyemale) (Aerial Parts) 575 mg †. It is also an important component of hair and nail health. NOW® Silica Complex is a unique blend of nutrients that support the health of skin, hair, and nails, structural features essential to natural beauty, along with the integrity of joints and bones.
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