https://community.sephora.com/t5/Best-Hair-Ever/Use-K18-course-and-then-use-Olaplex/m-p/7160261#M41518 <P>Hi, I was just wondering if you could do a course of the K18 and then when that is done switch to Olaplex alternating courses.</P> Wed, 30 Apr 2025 00:04:10 GMT cmrmcc 2025-04-30T00:04:10Z https://community.sephora.com/t5/Best-Hair-Ever/Use-K18-course-and-then-use-Olaplex/m-p/7160261#M41518 <P>Hi, I was just wondering if you could do a course of the K18 and then when that is done switch to Olaplex alternating courses.</P> Wed, 30 Apr 2025 00:04:10 GMT https://community.sephora.com/t5/Best-Hair-Ever/Use-K18-course-and-then-use-Olaplex/m-p/7160261#M41518 cmrmcc 2025-04-30T00:04:10Z