You are confusing silica with silicone - BIG difference! Silica is a naturally occuring substance in the body and nature - silicone is used in industry (and breast implants) and it's very dangerous. But do not confuse them!
This subject has been covered extensively in the past - if you do a search there's tons of info about it.
If you search all over the web you will find that the silica that the warnings are about is different. The kind warned about is used in "sand" among other things:
Product Names/Trade Names:
Silica Sand sold under various names: ASTM TESTING SANDS • GLASS SAND • FLINT SILICA • DM-SERIES • F-SERIES • FOUNDRY SANDS • FJ-SERIES • FP-SERIES • H-SERIES • L-SERIES • N-SERIES • NJ-SERIES • OK-SERIES • P-SERIES • T-SERIES • HYDRAULIC FRACING SANDS • MIN-U-SIL® • MYSTIC WHITE® • #1 DRY • #1 SPECIAL • PENN SAND® • Q-ROK® • SIL-CO-SIL® • SUPERSIL®.
You can also contact osha and they will tell you that the silica you are refering to, and the liquid kind used in labratories and drugs, and things of that nature, are totally different.
Here's pasted what is written in MIMS (the medical drug directory where every substance is listed) regarding silica, the same kind that is in Syntherol. This is an independant publication, published by the medical board, so there's no partial information here from companies with financial interests:
"Silica is a mineral that is widely distributed over the Earth. It strengthens plant stalks, giving them their ability to stand upright and resist winds. Silica is also present in the human bodies, where it is involved in various processes. Silica affects many of the human body's tissues because it is needed to regulate metabolism.
Silica is of particular importance for the skin and is an element in tooth enamel and in the body’s connective tissues (which support and connect the body’s organs). The most common form of connective tissue is collagen. As humans get older, the natural supply of Collagen diminishes, with the result that the skin becomes less elastic, losing its smoothness and tone, while the nails may become brittle and the hair becomes coarser and loses something of its shine.
Silica in combination with Vitamin C, protein and other substances is needed to form and preserve this vital Collagen tissue. Silica thus helps to keep skin healthy and supple at the same time as strengthening hair, nails and bones. It has been used with good results to improve the complexion, brittle nails and over-dry hair"
Syntherol is made under contract by one of the largest pharmaceutical suppliers in the world. The silica in it is PHARMACEUTICAL grade, intended for HUMAN use, so don't confuse it with the industrial silica/silicone.
The idea of having the silica in Syntherol is to 'soften' the fascia even more.