Verb
solubilize (third-person singular simple present solubilizes, present participle solubilizing, simple past and past participle solubilized)
(transitive) To make (something) soluble or dispersible, especially by adding a detergent.
In this function, surfactants wet body surfaces, emulsify or solubilize oils, and suspend soil. Source: Internet
To keep a clear solution (and not turbid)Add an appropriate quantity of 1,2-hexandiol in order to solubilize the sodium palmitate released when APPS is hydrolyzed. Source: Internet
I think they use it to help solubilize the Dimethicone in their formula. Source: Internet