https://community.qvc.com/t5/Beauty/It-s-Too-Hot-to-Breath/m-p/8092517#M904142 <P><a href="https://community.qvc.com/t5/user/viewprofilepage/user-id/1603">@monicakm</a>&nbsp; Are you asking where in the lineup of the things you use (whether a.m. or p.m.) should you use matrixyl?</P><P>&nbsp;</P><P>Here are some thoughts:</P><P>This is a peptide that can be used with other actives; shouldn't pose any problem of irritation.</P><P>&nbsp;</P><P>This peptide is usually thinner in consistency, and supposedly can penetrate more deeply into your skin layers. So, perhaps to use it right after your essences. Press it into your skin.</P><P>&nbsp;</P><P>May I ask which brand you purchased? TO? or Isomers?</P><P>&nbsp;</P><P>As far as the heat affecting potency...? (I do not know.)</P><P>&nbsp;</P> Thu, 17 Aug 2023 21:37:59 GMT Harpa 2023-08-17T21:37:59Z https://community.qvc.com/t5/Beauty/It-s-Too-Hot-to-Breath/m-p/8092492#M904138 <P>I'm pretty sure I have goodies in the mailbox.&nbsp; Will these temps ruin the potency?&nbsp; It's 108 with a feel like temp of 111.&nbsp; The only saving grace is the humidity...21%&nbsp; It's been that low for 3 days.&nbsp; I don't know that it's ever been that low.</P><P>&nbsp;</P><P>OK, I got the Matrixyl 3 Synthe 6 a couple of days ago.&nbsp; With my other serums, I put them on after my essences.&nbsp; Vit C goes on before Essences.&nbsp; Where in the lineup would I put this product?&nbsp; Can I use it with C and Lactic acid (I alternate these).&nbsp; How about Retinol and Glycolic acid...these two are nighttime.&nbsp; C and Lactic Acid are daytime (I alternate).&nbsp; It says you can use the Matrixyl am and pm.</P><P><IMG src="https://community.qvc.com/t5/image/serverpage/image-id/294411i3705193164A8921E/image-size/original?v=v2&amp;px=-1" border="0" alt="109.jpg" title="109.jpg" width="199" height="179" /></P> Thu, 17 Aug 2023 21:08:03 GMT https://community.qvc.com/t5/Beauty/It-s-Too-Hot-to-Breath/m-p/8092492#M904138 monicakm 2023-08-17T21:08:03Z