Think souping up a moisturizer with a hyaluronic acid serum, pairing vitamin C and retinol in your skincare routine, or—in this case—mixing hair conditioner with hair dye. This hair product ...

From using henna and curd to using henna and fenugreek, check out the DIY henna hair packs for naturally black and shiny hair ...

Speaker 1: Thank you very much. Speaker 3: (TO AUDIENCE) Right, so I know when I'm mixing hair colour, I need two ingredients, the colour and the developer. And I know you have to get the amounts ...

but it never hurts to have home remedies—including the best hair dyes for gray hair—on hand. When gray hairs start creeping up unexpectedly and your colorist is booked solid for weeks ...