https://community.qvc.com/t5/Beauty/Using-PTR-products-simultaneously/m-p/153502#M35181 <P>Hello. I currently use PTR's intensive retinol night serum as well as the moisturizer containing retinol + SPF which were a TSV several months ago. Can I use the dragon's blood serum at the same time? I get confused about which products can be used together. Thanks in advance.</P> Fri, 06 Jan 2012 14:48:57 GMT AVCchick 2012-01-06T14:48:57Z https://community.qvc.com/t5/Beauty/Using-PTR-products-simultaneously/m-p/153502#M35181 <P>Hello. I currently use PTR's intensive retinol night serum as well as the moisturizer containing retinol + SPF which were a TSV several months ago. Can I use the dragon's blood serum at the same time? I get confused about which products can be used together. Thanks in advance.</P> Fri, 06 Jan 2012 14:48:57 GMT https://community.qvc.com/t5/Beauty/Using-PTR-products-simultaneously/m-p/153502#M35181 AVCchick 2012-01-06T14:48:57Z