All modern fabric softeners, including Downy, have a Siloxane as part of their contents. Siloxane?æis a fluid made with silicone to soften fibers.

D.T Jamieson has written:

'Thermal conductivity of silicone oils of the polydimethyl siloxane types'

E. N. Ejike has written:

'Solid siloxane supports for organo transition metal catalyis'

gastrogel is an antacid, according to "Virtula mediacal centre.com it contains

Aluminium hydroxide; Magnesium hydroxide; Magnesium trisilicate; Simethicone

Simethicone is a proprietary anti-foaming agent (helps preveny trapped wind trapped wind), and is polydimethyl siloxane.

Silica gel is a granular, vitreous, highly porous form of silica and is made synthetically from sodium silicate.