According to EWG, one of the functions of SLS is as an emulsifier. I'd guess that's why it's in the Queen Helene, which (if I recall correctly) has mineral oil fairly high up in the ingredients list.
CG since 11/2011
2c /3a F /Mii, low porosity

Fall Products /Routine:
Clarifying: Herbal Essences Tealightfully Clean
Low Poo: Renpure Luxurious Argan Oil
CO: Suave Naturals Tropical Coconut or Daily Clarifying, V05 Strawberry or Kiwi Lime
RO /LI:
Tresemme Perfectly (un)Done, Cure Care, V05 Kiwi Lime Squeeze, V05 Strawberry, Renpure Brazilian Keratin (old formula),
Stylers: LALSG, AIF, HETT
PT: IAGirl's as needed