Garnier and any other High Street brand will contain preservatives, and these will be parabens as these are the standard fail-safe preservatives. Not using them shortens the shelf life of the alternatives.
This is why you have to search, usually online to find the alternatives and they usually cost more than the cheaper ranges of High Street cosmetics.
The aluminium/Alzheimers risk was declared incorrect some years ago
www.alzheimers.org.uk/site/scripts/documents_info.php?documentID=102
Retiring and living frugally in money from downsizing after years of stress
That quote was from Cancer Research UK's website 