[UPDATE] Liquidgrip clarified that there is a small amount of Rosin (less than 5%) in the product and they reassure that there is no transference to surfaces although didn't say how this was tested.
[SECOND UPDATE] Here is a nice review of the product by Spenser who tested it systematically and found evidence of some residue left on the rock compared to normal chalk. It's not something I often think about here in Scotland since almost all my routes are first ascents and some of them go over a decade without a repeat. However, in popular areas this review is a reminder that we need to be very careful how we use the natural resource - it can get trashed within the space of a few short years. It's seriously not good and it's unnecessary.