Kérastase Cristalliste Fine Hair Duo contains a shampoo and conditioner that are ideal if you have thin or thick, straight hair. It will reveal a head of softer, more lustrous hair that is easy to manage, wash after wash. The Kérastase Cristalliste Shampoo has a light and gentle formula, ideal for cleansing your hair and scalp without leaving behind any sticky residue. Your hair will be illuminated with a healthy, natural-looking shine. The Kérastase Cristalliste Conditioner is a creamy conditioner that has a luxurious gel-feel; it works fast to detangle problem hair and add a silky softness. It is easy to rinse away after use and will leave your locks feeling squeaky clean.

Shampoo: Wet hair thoroughly. Apply and massage through the scalp and hair in circular movements. Emulsify and rinse thoroughly, repeat this application and leave in for a few minutes. Lather by adding a little water and gently emulsify before rinsing thoroughly.

Conditioner: Apply product to washed and wet hair. Massage through lengths and ends. Leave in for 2-3 minutes. Emulsify and rinse thoroughly with warm water.