They share the same receptor. There is one door for B5 and B7, to get into your bloodstream. When you have appropriate parts of B5 with B7, the right proportions get into the blood and do what they are supposed to do. When you have too much B7, B5 will not get in the door.
No B5 means breakouts. The best source always is your food, good healthy, natural, and organic. If you cannot do that. Then you want to supplement, make sure that supplement is 100% natural.
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