I dyed my hair blonde yesterday....can i dye it again today?

it came out like really really blonde!! too blonde!! i went out and bought a dark blonde today hoping it will complement with the blonde already in my hair. will this turn my hair green? my hair isnt really damaged or dry...i also bough this extra hydrating conditioner cream and the dye i bought is a hydrating dye. is this safe??? the dye i bought has no amonia too...