Hello beautiful people!

I was looking into henna-ing (new word?) my hair soon. I stumbled across this interesting product at my local Lush Cosmetics shop. It's a solid henna bar, and comes in a few shades:


Does anyone have experience with using this? My hair is transitioning from chemically straightened, and I'm trying to grow it out - so anything damaging is not for me.

The ingredients seem to look ok, though I'm not sure what limonene or linalool are. Some type of citrus-based preservatives? *shrugs*

Any insight into this would be great!