Last weekend i went to a trade show where i saw a line of gel products that i was told were resin based rather than acrylic based. The salesperson told me that the company worked with materials used in dentistry and therefore thay had lower toxicity than other gels. Does this difference really exists in gel products: some resin based and some acrylic based? If so, what are the advantages/disadvantages? If you want to see the company website, here's the address: www.envoguenails.com