Is lemon good for hair? Lemon is a potent, versatile ingredient which, if used right can work wonders for your hair – from treating dandruff to boosting shine. Let's take a closer look at this hero ingredient and how you can add it to your hair care routine. If you're into home remedies and DIY masks for your hair and skin, then you probably know by now the hidden wonders of lemon for hair . Lemon can be considered a hero ingredient as it is used to treat all kinds of conditions from hair growth to dandruff. So if you've been wondering if lemon is good for hair, read on to find out just exactly how it can benefit your hair.