Hairdressers/Hairstylists HELP with my haircolor?!?

i been tryin to figure out what to do about this haircolor and i have not been able to get the exact answer that i want, please i need your help, i previously color my hair a chocolate brown from loreal excellence in feb, and then i dyed it in march a praline color or cinnamon stick garnier nutrisse but i live in dubai uae, so the haircolor names are a little different in english it says praline on the box and in arabic they wrote cinnamon stick and (chestnut) so im confused, when i color it this color it did not look like the box, its still a brownish with some reddish brownish tones in the sun, but latley ive been using the garnier color last shampoo/conditioner and its making it a little lighter, i found the color that i had when i first got married which is koleston 2000 from wella and its a light chestnut color and i want to color it in may, becuz in june i am leaving on vacation to see family, i just want to know can i put it on top of the color i have now?

Hairdressers/Hairstylists HELP with my haircolor?!?
if the new color is lighter then the first color then the answer is no, color cant lift color. You will have to bleach it or use a hair stripper on it first to lighten it, then apply the new lighter color. Hope this helps