Low molecular weight gels are the result of the self-assembly of small molecules into fibres. These entangle to entrap the solvent. When the solvent is water, these are called hydrogels. Low molecular weight hydrogels are potentially really useful. To understand these materials, it is common to add a dye or other hydrophobic additive to allow imaging or to follow gelation by fluorescence. It is often assumed that these added dyes are innocent and have no effect on the assembly. However, this seems unlikely as the dyes must interact with the structures to act as a stain and so could easily also become involved in the self-assembly process. We will probe this here, using SANS to compare between the gels alone and the gels in the presence of the dyes.