Water, Glycolic Acid, Sodium Hydroxide, Chamomilla Recutita (Matricaria) Flower Extract, Aloe Barbadensis Leaf Juice, Camellia Oleifera (Green Tea) Leaf Extract, Sodium Hyaluronate, Panthenol, Sodium PCA, Propylene Glycol, Butylene Glycol, Hydroxyethylcellulose, Polyquaternium-10, Phenoxyethanol, Methylparaben, Ethylparaben, Propylparaben, Butylparaben, Isobutylparaben.
Water, Glycerin, Glycolic Acid, Sodium Hydroxide, Butylene Glycol, Hydroxyethylcellulose, Propylene Glycol, Panthenol (Pro-Vitamin B5), Palmitoyl Pentapeptide-4 (Amino-Peptide), Camellia Sinensis Leaf Extract (Green Tea), Vitis Vinifera (Grape) Seed Extract, Allantoin, PEG-100 Stearate, Cellulose, Xanthan Gum, Cellulose Gum, Benzyl Alcohol, Titanium Dioxide, Mica, Iron Oxides.
The main ingredient (after water) in both products is the same (glycolic acid). The gel texture is the same in both products. I suspect the percentage is the same (though there is no way of knowing as the dupe product does not list percentages of each ingredients like PC's product does).
The supporting characters (ingredients) in both products are quite different but they both have Green Tea Leaf Extract in common.