You can sign up for a variety of different free Clairol Nice ‘n Easy hair color samples. However, their site was hammered all day yesterday and kept spitting out 503 errors.
The good news is I checked the fine print and noticed this promo runs through March 31, 2018. Chances are this is a large scale freebie giveaway, so even if the page is broken for you today, it should still be active for you once the site comes back up.
On top of this great freebie, Clairol has a $3/1 Hair Color printable coupon that you can print twice from your phone or computer.