A sour appearance on business competition show Shark Tank actually ended in success for start-up founder Jesse Genet . The 27-year-old taped this past year , pitching her company Lumi which sells DIY kits to print custom designs on T-shirts , bags , and other surfaces . But the shrewd angel investors on the show refused to bite at Genet 's offer of a 5 per cent stake in her company for $ 250,000 , believing she was overestimating the worth of the business of $ 5 million . Scroll down for video . The pitch : Jesse Genet , CEO of DIY screenprinting company Lumi , failed to get an investment when she appeared on Shark Tank in a recent episode . Empty handed : The sharks felt that the 27-year-old 's valuation in her company was too high and she refused to compromise on lower offers . Success : Shortly after the episode was taped , Genet applied for and was accepted into leading Silicon Valley start-up incubator Y Combinator . Shark Kevin O'Leary estimated that she was only taking back $ 100,000 in profits after taxes and found the $ 5million valuation a little aspirational . 'That ’ s 50 times your free cash flow - It ’ s ridiculous , ' he said . O'Leary and fellow shark Laurie Greiner offered Genet an alternative deal , based on a much-lower valuation of her company , but Genet refused to budge , leaving the show empty handed . As she ended her bargaining with the sharks , Genet remained positive saying : ' I 'm going to make this into a credible company ' . And it appears she was right . Just one month after her episode aired she has already doubled her profits . Shortly after taping the show , Genet applied for and was accepted into Y Combinator , one of Silicon Valley 's most prestigious start-up incubators . She joined the incubator in December and in just three months has increased her profits to $ 2.5 million by expanding her product line and redesigning her website . ' [ The comments ] were dicey , but I can handle that , ' Genet told Business Insider . ' [ Shark Tank ] helped us realize what was really big about our business and what was not scalable . ' On Tuesday , she presented her company at YC 's biannual Demo Day , showing off a whole new line of products not shown on Shark Tank - including custom stamps . On the right track : In three months at Y Combinator , Genet has doubled her sales to $ 2.5 million . Above , photos show how Genet 's patented printing technique works . Genet started her business three years ago , after finding a method for printing on natural surfaces with a negative film , developed my an inventor in the 1950s . Genet spent two years trying to track down the inventor , and ended up convincing him to sell her the trade secret formula for $ 50,000 . Kickstarter helped her raise $ 270,000 to get the business started , and now her product is sold in retailers like Michael 's .
Jesse Genet , 26 , pitched her DIY screenprinting business on a recent episode of Shark Tank . She left the show without an investment , since she was unwilling to compromise with the sharks who thought her valuation was too high . Shortly after , Genet applied for and was accepted into Silicon Valley 's leading start-up incubator Y Combinator . In three months at Y Combinator , Genet has doubled the profits of her business called Lumi .