Bi-phase make-up remover - droplets of cyclomethincone in water phase
I am working on bi-phased makeup remover. I analysed eight commercial product and they all are made pretty much the same (I marked ingredients that I noticed in most of them bold). The LOI below is Cellular Eye Make-Up Remover by La Prairie:
Water, Cyclomethicone, C12-15 Alkyl Benzoate, Butylene Glycol, Rosa Centifolia (Rose) Flower Extract, Centaurea Cyanus (Cornflower) Extract, Glycoproteins, Panax Ginseng Root Extract, Equisetum Arvense (Horsetail) Extract, Sodium Chloride, Panthenol, Citric Acid, Bisabolol, Tetrasodium EDTA, Potassium Chloride, Fragrance, Benzyl Alcohol, Linalool, Potassium Sorbate, Phenoxyethanol, Methylparaben, Ethylparaben, Propylparaben, Butylparaben
I have a couple of questions regarding this type of system:
1) What is the function of Sodium Chloride in this formula? It is very typical ingredient for these products (and I tried many, they all are noticeably salty)
2) Do I need to add oil soluble preservative to the oil phase? I can see both oil and water-soluble preservatives in the LOI above.
3) I tried to experiment with it. Removes waterproof makeup well, but doesn’t look right, because after I shake it there are droplets of cyclomethicone trapped in the water-phase. What can be done to make sure it separates nicely into two phases?
Thank you all in advance!