I've been taking bamboo extract (powder form) for a little over a year two years! I started taking it because after many years of waiting for the biotin to work on my hair, I decided to stop and look for something else. That's when I ran across many good articles about the bamboo powder. Not only is it good for hair growth and beauty, it may help re-build and maintain bone density. Silica is the main ingredient found in the bamboo extract powder and this substance makes up a large portion of our collagen molecules all over the body. Together with a healthy diet, including the right amounts of vitamin D and calcium, bamboo silica may help with hair growth, bones, skin and nails.
I buy the loose powder form of bamboo silica extract...the brand called Bulksupplements from Amazon. This is a white, very fluffy, tasteless and nearly weightless powder which mixes easily into liquids. Upon mixing it into a liquid, it tends to settle a bit and has a very slight grittiness to it but not uncomfortable to swallow. I take a daily heaping 1/4 teaspoon mixed into my 'green' drink every morning. If you are interested look at item number B01LVZW6Z7 on Amazon. Many sizes to choose from.
I've written many posts re this supplement on the Beauty forum. If you come here often then most likely you've heard about it from me.
NIH article re bone health and silica:
(rather lengthy, so go to 'Conclusion' at the bottom for those who don't want to read the whole article)
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2658806/