Garnier Olia Oil-Powered Permanent Hair Color vs Hannah Natural Pure Henna

Both options make for good, if unremarkable, Hair Dyes at the $10 budget range. While they should serve reasonably well, you might want to look into some other options at that price point.

If you're still interested in learning more about the Garnier Olia Oil-Powered Permanent Hair Color and Hannah Natural Pure Henna, however, we wrote-up what we know about them:

Good Housekeeping, a review site with a history of doing objective hands-on testing, has great things to say about the Garnier Olia Oil-Powered Permanent Hair Color. In fact, it's "Best Black Hair Dye for Damaged Hair" in its "10 Best Black Hair Dyes for Perfectly Dark, Shiny Strands" roundup, which points toward it being a good Hair Dye.

Moving on to the Hannah Natural Pure Henna: no sources that perform reliable and objective hands-on testing have included it in their Hair Dye roundups, which usually means that a product doesn't make for a good purchase.

As a last step, we wanted to do a head-to-head Garnier Olia Oil-Powered Permanent Hair Color vs. Hannah Natural Pure Henna comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.