BonVit henna question

Hi,
I bought this henna today, BonVit 'dark red'.

The ingredients listed are: henna rhizia stricta and indigofera agentia. I'm just wondering if anyone has ever used this before? Is it ok to use if I already have chemical color in my hair? Is there anything I should add to get better results?
I bought this henna today, BonVit 'dark red'.

The ingredients listed are: henna rhizia stricta and indigofera agentia. I'm just wondering if anyone has ever used this before? Is it ok to use if I already have chemical color in my hair? Is there anything I should add to get better results?
Fine, very porous 3a
Boycotting all brands owned by L'oreal
0
Comments
If there are any other ingredients at all, all bets are off. That's why I use only plain body-art-grade henna and indigo - it's just the un-fooled-around-with plant.
Commercial henna products can contain metals, salts, and compounds than can give very unpredictable and undesirable results. That's why most hair stylists are so wary of touching the color on anyone who's used henna - most don't know the difference between BAG or anything else.
Current Main Rotation: MG217 medicated or Aim2Health 'poos for scalp, Elucence cond., Spiral Solutions Protein & Deeply Decadent Cond., CJCCCC reg or lite,CJ Pattern Pusha,, Giovanni LA Hold Hair Spritz + lots more, sporadically
HG Method: Super Soaker + Smasters-ing, brief upside down diffusing w/360o diffuser then clips/clamps & air dry. Newly gray - stopped my henna glosses!
www.fotki.com/auntnett
If interested in ordering from Mehandi, just contact them about whether they ship overseas - they're very responsive. I'm pretty sure I remember seeing someone here talk about ordering from them from the UK www.mehandi.com
www.hennaforhair.com
Current Main Rotation: MG217 medicated or Aim2Health 'poos for scalp, Elucence cond., Spiral Solutions Protein & Deeply Decadent Cond., CJCCCC reg or lite,CJ Pattern Pusha,, Giovanni LA Hold Hair Spritz + lots more, sporadically
HG Method: Super Soaker + Smasters-ing, brief upside down diffusing w/360o diffuser then clips/clamps & air dry. Newly gray - stopped my henna glosses!
www.fotki.com/auntnett