I'm using a new product which is designed for acne prone people. It's a gel that seems to be keeping my mild acne under control. You use it after cleansing and before moisturising. But I can't figure out why it would be helping? There is no BP or SA. I've listed the ingredients. What is in it that is making this product (seemingly) work?

Aqua, Propylene Glycol, Cyclotetrasiloxane, Cyclopentasiloxane, Sodium PCA, Cetearyl Olivate, Glycerin, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Sodium Scymnol Sulfate, Isohexadecane, Carbomer, Triethanolamine, Polysorbate 80, Sorbitan Olivate, Phenyl Trimethicone, C12-15 Alkyl Benzoate, Sodium Lactate, Serine, Urea, Sorbitol, Benzyl Alcohol, Phenoxyethanol, Diazolidinyl Urea, Xanthan Gum, Tocopheryl Acetate, Panthenol, Retinyl Palmitate, Dimethiconol, Dimethicone Crosspolymer, Pentylene Glycol, Lactic Acid, Sodium Chloride, Allantoin, Disodium EDTA