Olay Regenerist Fragrance-Free Serum Ingrendients (1.7 oz for $23.99)
CYCLOPENTASILOXANE, WATER, GLYCERIN, POLYMETHYLSILSESQUIOXANE, NIACINAMIDE,* DIMETHICONE, DIMETHICONE CROSSPOLYMER, PANTHENOL,† BUTYLENE GLYCOL, PROPYLENE GLYCOL, PALMITOYL PENTAPEPTIDE-4,§ CARNOSINE,§ TOCOPHERYL ACETATE,** CAMELLIA SINENSIS LEAF EXTRACT,†† ALLANTOIN, CETYL RICINOLEATE, BIS-PEG/PPG-14/14 DIMETHICONE, PEG-10 DIMETHICONE, PEG-100 STEARATE, PEG-10 DIMETHICONE CROSSPOLYMER, DISODIUM EDTA, ETHYLPARABEN, PROPYLPARABEN, METHYLPARABEN, BENZYL ALCOHOL, CITRIC ACID. ?? *VITAMIN B3 †PRO-VITAMIN B5 §AMINO-PEPTIDE **VITAMIN E ††GREEN TEA
Boots No7 Protect & Perfect Intense Beauty Serum (1oz for $22.99)
Cyclopentasiloxane, Aqua/Water/Eau (Water), Butylene Glycol, Dimethicone Crosspolymer, Cyclohexasiloxane, Glycerin, Arabinogalactan, Sodium Ascorbyl Phosphate (Vitamin C), Magnesium Sulfate, Dimethicone Copolyol (Silica), Phenoxyethanol, Sodium PCA, Cetyl/PEG/PPG 10/1 Dimethicone, Hexyl Laurate, Polyglyceryl 4 Isostearate, Retinyl Acetate (Vitamin A), Medicago Sativa (Alfalfa) Extract (Alfalfa), Methylparaben, Propylene Glycol, Lupinus Albus Seed Extract, Butylparaben, Ethylparaben, Carbomer, Propylparaben, Isobutylparaben, Polysorbate 20, Ginseng (Panax Ginseng) Root Extract, Morus Alba (Mulberry) Leaf Extract, Tocopherol (Natural Vitamin E), Palmitoyl Oligopeptide, Palmitoyl Tetrapeptide
Both of them have great anti-oxidants however most of the anti-oxidants in the Boots serum come after "phenoyethanol" which is a preservative, meaning there is more preservative in the serum than vitamin A, Ginseng, Vitamin E etc. This makes the Olay serum a better deal because it gives you more antioxidants (in higher concentration) for your skin.
Also the Boots serum is more expensive at 22.99 for 1 oz while 1 oz of the Olay serum is $14.11 ( the full price is 23.99 for 1.7 oz)