Healing Guide on the Immune System by Lori Degolyer | Nov 1, 2019 | Healing Guides, ISL Healing Guides | 0 comments You might not ever think about the immune system except for those times when you need it most (a.k.a. when you have a cold), but hopefully after reading this Healing Guide, you’ll get a better idea of what it does for you every day. To access this post, you must purchase Aromatherapy Practitioner Course or Inner Sanctum Library + Healing with Aromatherapy Course.