website clones - advice please

[Mmarzex]

Hi, I have recently set up a beauty website and have been online now for about 3 months. The site sells a wide range of beauty products: hair removal, anti ageing, slimming wellbeing, nail products etc.The sales for nail products are much higher that the other categories so I'm now in the process of setting up a site selling specialising in nail products.I would like to have a beauty category for my nail site to include approx 30% of my best products from my beauty site and vice versa for my beauty site - 30% of my nail products on my beauty site.I have heard that google frowns on cloned sites - so my question is would google view this ratio as a cloned site?Would really appreciate advice as I dont want to upset google!Thank you