I haven't tried it, but it doesn't sound like it would hurt to try at least once. It's seems like it could be a rather inexpensive "product" to add to a regimen in addition to having tea to drink if you didn't like it in your hair. I wonder if you did any of them often enough if it would change hair color?

I think I had read somewhere about using chammomile to sort of help lighten hair over time. I would guess that any of the sort of brown teas may help enrich brown hair or maybe darken blondish hair based on that?
3C/4A, fine texture, low-medium density, and low porosity?
CG since November 2013.

Pre-Poo: Coconut Oil overnight, or a greek yogurt mixture
Shampoo: Curls Cleanser and/or clarifier
Conditioner: trying out different Suave Naturals conditioners and GVP's leave-in conditioner at the moment
Styler: iagirl's super smooth flax curl cream. <3
PT: iagirl's gelatin treatment 3-4 times a month
DT: conditioner or yogurt base with honey and oil if the conditioner has none.