The present disclosure relates to transparent ready-to-use hair bleaching compositions and compositions useful for preparing the transparent ready-to-use hair bleaching compositions. The transparent ready-to-use bleaching compositions typically include: (i) one or more oxidizing agents selected from the group consisting of persulfates, perborates, percarbonates, a salt thereof, and a mixture thereof; (ii) one or more non-acrylic thickening polymers; (iii) one or more acrylic polymers; (iv) hydrogen peroxide; (v) one or more polyurethane polyethers; and (vi) water. Kits and methods for bleaching hair also disclosed.