The Olaplex Hair Oil is a lightweight product that customers love for its ability to leave their hair feeling weightless and smooth. The oil is also safe to use with Brazilian blowouts and is not known to affect hair color. One-time use has made hair feel like silk. However, there have been some negative reviews, with a few customers experiencing hair loss and not seeing much difference in their hair. While the product is somewhat costly, it is worth the price in terms of how it changes hair health. Olaplex Hair Oil appears to be a great product for those who want to make their hair feel soft, smooth, and healthy