本帖最後由 viley 於 15-6-11 14:16 編輯
ONE KEY FACTOR THAT MAKES SOME OILS WORK FOR SOME BUT NOT FOR OTHERS IS THE RATIO OF LINOLEIC ACID TO OLEIC ACID IN THE CHEMICAL COMPOSITION IN EACH OIL.
Oleic acid is a monounsaturated fatty acid also omega-9 fatty acid. Linoleic acid is an unsaturated fatty acid also omega-6 fatty acid. “Acne patients have also been shown to have low levels of linoleic acid in their skin surface lipids.” —Source
WHEN OUR SKIN IS DEFICIENT IN LINOLEIC ACID, OUR SKIN’S NATURAL SEBUM BECOMES THICK AND STICKY WHICH CLOGS PORES AND CREATES ACNE.[p=26, null, left]Usually oily congested and acne prone skin’s sebum is predominately composed of oleic acid. We can create the linoleic acid versus oleic acid balance needed by applying oils high in linoleic acid directly to our skin. When our skin’s natural sebum is predominately composed of lipids high in linoleic acid we have little to no break outs.
IF YOU HAVE VERY SERIOUS ACNE, I WOULD AVOID ALL CARRIER OILS WITH CHEMICAL COMPOSITIONS HIGHER IN OLEIC ACID AND USE CARRIER OILS/PRODUCTS THAT HAVE INGREDIENTS WITH NATURAL OILS HIGH IN LINOLEIC ACID. THIS INCLUDES ALL SKIN CARE AND HAIR CARE.
Extracted from: http://www.minimalistbeauty.com/oils-specifically-for-acne-prone-skin/