This has been life saving for my hair. It has made my hair thicker and my highlights last. I use heat on my hair everyday if not every other and this has SAVED my hair no joke. I can’t recommend this enough. Do yourself a favor and purchase. Right now Walmart has a bundle for cheaper than buying both separately! I swear by Olaplex for my hair and I would 100% recommend for anyone else! LTKunder100 LTKbeauty LTKsalealert