Pros Bond-building technology repairs hair from the inside out Deeply hydrates to lock in your natural curl pattern and stop frizz Highly concentrated formula means a small amount goes a long way Cons Formula can be a bit heavy for guys with thinner curls This stuff is essentially a gym workout for damaged hair. It uses Olaplex’s famous, patented bond-building technology to literally repair the broken ones in your hair shaft from the inside out. This is the kind of shampoo you use on curls that have been through the wringer (whether that's hard water or sun damage). While it’s highly marketed toward chemically treated hair, the truth is that curly hair is inherently fragile, making this a stellar pick for any guy looking to spruce up his strands. Beyond the bond-repairing magic, it delivers a massive dose of hydration that helps lock in your natural curl pattern and remove any traces of frizz.…