How to use Kérastase Blond Absolu Night Serum 90ml:

1. Shampoo and condition your hair as usual.
2. Towel dry your hair to remove excess water.
3. Take a small amount of the serum and spread it evenly on your palms.
4. Apply the serum to your hair, focusing on the lengths and ends.
5. Massage the serum into your hair for a few minutes.
6. Leave the serum on overnight and let it work its magic.
7. In the morning, rinse your hair thoroughly with water.
8. Style your hair as desired.