I didn't find any disadvantages. I have been going to Adelina's procedures for several years. I have something to compare with, I live in Russia, in Novosibirsk, in Moscow I visit good cosmetologists, but only from Adelina I get out 10 years younger. A certified dermatologist, she always knows what procedure my skin needs to erase at least for a while the extra years. Thank you, Adeline!