Hydrogen Peroxide dissolves hair. I don't know if newer 'bleaching' hair dyes are any gentler or use something different but I did a whole chemistry project on it and took samples of people's hair.
A friend did an art project on the standard of women's beauty and tried to make a statement. Put people's hair in peroxide and some of those samples dissolved completely 0_o
All my friends who dye blonde have fried, split, dry hair.
the reason you see blonde hair or lightly colored hair as split ,fried , or dried is an illusion to the eyes, if you took two people witht he same amount of hair damage but one was dark and one had light hair the one with light hair would seem to have more damaged hair, it is because the light absorbes into lighter hair, and the dark hair reflects light making it "seem" healthier when it fact their both damaged. Hydrogen peroxide is quite different then bleach for hair dyes.
anyways urca, what youve got going on is that the saturation didnt take effect, first and foremost I hightly recommend waiting a week before dying it again and use in a leave in conditioner every night or put conditioner in your hair every evening for 30 mins then wash it out.
Then go to a beauty supply store and buy 20 volumizer mix and delevoper (should be enough to do what you want it will be a bottle of creamy liquid and a package of powder)
and it should work, the 20 volumizer should be enough to take out all the pink pigments and also not damage the hair any futher.