A crystal clear, transparent insect repellent in gel form contains N,N-diethyl-m-toluamide (DEET), water, a lower alcohol, preferably ethanol, carboxypolymethylene as a gelling agent, triethanolamine for neutralizing the gelling agent, methyl and propyl paraben, a perfume for masking the odor of the DEET, and a polysorbate, preferably polyoxyethylene (20) sorbitan monolaurate for improving the texture of the gel.
In at least one embodiment, the present invention relates to a gypsum composition suitable for use in the manufacture of construction materials comprising a) gypsum, b) water, and c) a water repellancy composition comprising a hydroxy-based cellulose and a siliconate.