https://community.qvc.com/t5/Beauty/Question-for-Differin-and-Retin-A-users-those-who-use-both/m-p/171183#M40456 <P>I am just wondering how you use both. Do you alternate nights, use both together or do you use Differin in AM and RA at night.</P> <P>I have been using Differin which has been working well to rid my blackheads but would like to incorporate RA for it's collagen building properties. TIA</P> Wed, 07 Mar 2012 16:57:52 GMT Tweetybrd 2012-03-07T16:57:52Z https://community.qvc.com/t5/Beauty/Question-for-Differin-and-Retin-A-users-those-who-use-both/m-p/171183#M40456 <P>I am just wondering how you use both. Do you alternate nights, use both together or do you use Differin in AM and RA at night.</P> <P>I have been using Differin which has been working well to rid my blackheads but would like to incorporate RA for it's collagen building properties. TIA</P> Wed, 07 Mar 2012 16:57:52 GMT https://community.qvc.com/t5/Beauty/Question-for-Differin-and-Retin-A-users-those-who-use-both/m-p/171183#M40456 Tweetybrd 2012-03-07T16:57:52Z