I disagree, this is a bad idea, how many people around the world have adopted at least one cryptocurrency? No one knows the number but this is probably less than 5%, and of those people how many people will hold the altcoin the OP wants to use as an exclusive payment option for their cosmetics and have a need for their product? Without a doubt an amount even lower than that, so when given the option any potential client which may be interested on buying their products will go somewhere else as they are not going to adopt an altcoin just to purchase something they need.