How pre and post treatments should be used when colouring and lightening hair?

Pre-treatments should be applied to prepare the hair for coloring or lightening, helping to hydrate and protect it from damage. This can include deep conditioning treatments or bond-building products that strengthen the hair structure. Post-treatments, on the other hand, are essential for restoring moisture and maintaining hair health after the process, often involving conditioners, masks, or leave-in treatments. Together, these treatments ensure optimal color results while minimizing damage and enhancing overall hair vitality.