Vitamin D (cholecalciferol) is a useful vitamin that may help speed skin regeneration and help with skin inflammation. Vitamin D works well in synergy with essential fatty acids, as in Rose Hip and Hemp Seed oils. 

How to use:

From 0.02% to 0.05% is all that is needed. It is heat sensitive, so it is recommended to be added to creams and other products after they have cooled.