At the reception, the lamp does not catalyze, I thought it was coming products (base and top coat) that were possibly poor. So I bought the good brand products, and no change. They made me notice that there was a protective film on the mirror there that I had not taken away, and there, ho miracle it works very well this lamp !!! Too bad the manual is in English and there was nothing said about this film !!! it would have been easier from the start !!! So it's great that lamp!