Peptide Skincare & BeautySkin science and ingredient guides

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One Thing Niacinamide Glutathione Serum Versus innisfree Vitamin C Green Tea Enzyme Brightening Serum

One Thing Niacinamide Glutathione Serum Versus innisfree Vitamin C Green Tea Enzyme Brightening Serum Detailed comparison of One Thing Niacinamide Glutathione Serum versus innisfree Vitamin C Green Tea Enzyme Brightening Serum. This brightening serum is formul

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One Thing Niacinamide Glutathione Serum Versus innisfree Vitamin C Green Tea Enzyme Brightening Serum Detailed comparison of One Thing Niacinamide Glutathione Serum versus innisfree Vitamin C Green Tea Enzyme Brightening Serum. This brightening serum is formulated around Niacinamide and Glutathione to brighten dull-looking skin and fade the look of dark spots. This brightening serum is formulated around 3-O-Ethyl Ascorbic Acid and Gluconolactone to brighten dull-looking skin and refine skin texture. Water Niacinamide Butylene Glycol Glycerin Propanediol 1,2-Hexanediol Hydroxyacetophenone Glycereth-25 PCA Isostearate Coptis Japonica Root Extract Citric Acid Ethylhexylglycerin Citrus Unshiu Peel Extract Xanthan Gum Zea Mays Silk Extract Disodium EDTA Glutathione Hyaluronic Acid Hydrolyzed Hyaluronic Acid Sodium Hyaluronate Fructan Melaleuca Alternifolia Leaf Extract Glucose 3-O-Ethyl Ascorbic Acid Ascorbic Acid Sodium Ascorbate Tocopheryl Acetate Linoleic Acid Tocopherol Helianthus Annuus Seed Oil Oleic Acid Palmitic Acid Stearic Acid Linolenic Acid Water, Niacinamide, Butylene Glycol, Glycerin, Propanediol, 1,2-Hexanediol, Hydroxyacetophenone, Glycereth-25 PCA Isostearate, Coptis Japonica Root Extract, Citric Acid, Ethylhexylglycerin, Citrus Unshiu Peel Extract, Xanthan Gum, Zea Mays Silk Extract, Disodium EDTA, Glutathione, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Fructan, Melaleuca Alternifolia Leaf Extract, Glucose, 3-O-Ethyl Ascorbic Acid, Ascorbic Acid, Sodium Ascorbate, Tocopheryl Acetate, Linoleic Acid, Tocopherol, Helianthus Annuus Seed Oil, Oleic Acid, Palmitic Acid, Stearic Acid, Linolenic Acid Betaine Erythritol Lactobacillus Ferment Lysate Squalane Acrylates/C10-30 Alkyl Acrylate Crosspolymer Dextrin Tromethamine Gluconolactone Panthenol Carnosine Allantoin Caprylic/Capric Triglyceride Daucus Carota Sativa Root Extract Pentylene Glycol Sodium Metaphosphate Silica Dimethyl Silylate Cyclodextrin Madecassoside Ascorbyl Tetraisopalmitate Salix Alba Bark Extract Dipotassium Glycyrrhizate Protease Tranexamic Acid Achillea Millefolium Extract Beta-Carotene Ferulic Acid Sodium Hyaluronate Crosspolymer Sodium Acetylated Hyaluronate Water, Propanediol, Glycerin, 1,2-Hexanediol, 3-O-Ethyl Ascorbic Acid, Betaine, Erythritol, Butylene Glycol, Lactobacillus Ferment Lysate, Squalane, Helianthus Annuus Seed Oil, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Dextrin, Xanthan Gum, Tromethamine, Gluconolactone, Citrus Unshiu Peel Extract, Panthenol, Carnosine, Niacinamide, Allantoin, Hyaluronic Acid, Caprylic/Capric Triglyceride, Daucus Carota Sativa Root Extract, Pentylene Glycol, Sodium Metaphosphate, Silica Dimethyl Silylate, Tocopherol, Ethylhexylglycerin, Cyclodextrin, Madecassoside, Ascorbyl Tetraisopalmitate, Salix Alba Bark Extract, Dipotassium Glycyrrhizate, Protease, Tranexamic Acid, Glutathione, Achillea Millefolium Extract, Sodium Hyaluronate, Beta-Carotene, Ferulic Acid, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate Crosspolymer, Sodium Acetylated Hyaluronate Be the first to review These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. 1,2-Hexanediol is a synthetic liquid and another multi-functional powerhouse. It is a: Humectant, drawing moisture into the skin Emollient, helping to soften skin Solvent, dispersing and stabilizing formulas Preservative booster, enhancing the antimicrobial activity of other preservatives 3-O-Ethyl Ascorbic Acid is one of the most popular "stable" vitamin C derivatives in skincare. Plain ascorbic acid is fantastic but notoriously fragile; it browns, oxidizes, and loses potency fast. So attaching an ethyl group to the third carbon of the molecule gives it some cool perks: In a formula, it does the 3 classic vitamin C jobs: it acts as an antioxidant, helps brighten skin tone by inhibiting tyrosinase, and supports collagen. The evidence is reasonably solid for a cosmetic ingredient; Liao and colleagues (2018) showed it's significantly more stable than ascorbic acid while still being effective. A 2021 study by Zerbinati and colleagues tested a serum with 30% 3-O-ethyl-l-ascorbic acid and 1% lactic acid significantly increased collagen production, reduced UVB-induced DNA damage, and decreased melanin on a reconstructed pigmented skin model. Typical real world usage sits around 0.5-5% (and 1-2% is common for daily serums). Amounts up to 30% have been shown to be non-irritating on human skin samples, but two isolated cases reported allergic contact dermatitis so a patch test is sensible if you have reactive skin. Butylene Glycol (or BG) is used within cosmetic products for a few different reasons: Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients. Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness. This ingredient comes from the peel of the satsuma mandarin fruit native to Japan. Unlike other citrus ingredients, this one is not known to cause photosensitivity. This is because the citrus ingredients that cause sensitivity are high in furanocoumarins. When exposed to UV, furocoumarins bind to and destabilize your DNA, speeding up the rate of sunburn. Citrus Unshiu Peel Extract is unique in that the peel contains very low levels of furanocoumarins and tested products with this ingredient confirmed no detectable furanocoumarins. The peel is rich in antioxidants and lab studies show it can help brighten skin by inhibiting tyrosinase, the enzyme responsible for melanin production. One study on the fermented version of this ingredient found it could help reduce UVA-induced collagen breakdown. Though it is worth noting that while results are promising, robust human clinical trials are still needed. This ingredient naturally contains limonene and other aromatic compounds that make it a perfuming ingredient. The official COSING database only lists this ingredient as