Halo does not change skin color . We are very careful in our practice and treat each patient and their skin conditions differently . We may choose to place the patient onto certain products prior to halo to pre- treat the skin prior to the halo . Also the halo is a tunable hybrid laser that is capable of both ablative and non ablative treatments which simply put means that we can adjust and fine tune the settings to come to a individualized treatment parameter that is just right for that patient to prevent hypo pigmentation or what they were speaking of as " whiter " or lighter skin color .