naturally sourced silica (from bamboo extract 266mg), not horsetail,small, easy to swallow, taste-free tablets,with key nutrients including biotin, zinc and vitamin c ,a decent level of msm 300mg, a fascinating nutrient needed for the production of proteins silica advance has been formulated by nutrition experts to provide nutrients key to the health of our hair, skin and nails. this approach means that our formula not only contains relevant nutrients, but relevant levels, which is quite different from the rather ‚¬ëœblanket approach\' adopted by many companies promoting hair, skin and nail formulas.research has shown that a number of nutrients play a role in the health of hair, skin and nails, including biotin, zinc and vitamin c. and so you\'ll find our technical team have included a decent level of all of these to the formula. and of course we knew that the new formula would need to contain the same high potency, naturally sourced silica as our silica original product. our original silica 200mg product is one of our most popular products with customers giving it a rating of 5 stars. these genuine online reviews make interesting reading with customers making many positive comments about nail strength and stronger, more manageable hair.silica advance is designed to complement your daily skin care regime and can be safely taken with one of our existing multivitamin and mineral formulas. it also works well when taken in conjunction with our high strength fish oil 1100mg.