Kiehl's Auto-Tone Discoloration & UV Solution SPF 30 Versus Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ PA++++

Kiehl's Auto-Tone Discoloration & UV Solution SPF 30 Versus Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ PA++++ Detailed comparison of Kiehl's Auto-Tone Discoloration & UV Solution SPF 30 versus Beauty of Joseon Relief Sun : Rice + Probiotics SPF 50+ PA++++. This brightening treatment is formulated around Niacinamide and 2-Mercaptonicotinoyl Glycine to fade the look of dark spots and brighten dull-looking skin. This chemical sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50. Butyl Methoxydibenzoylmethane 3% Homosalate 10% Ethylhexyl Salicylate 5% Octocrylene 7% Water C15-19 Alkane Niacinamide Glycerin Butylene Glycol Silica Titanium Dioxide Hydroxyacetophenone Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate Potassium Hydroxide Sodium Thiosulfate Taraxacum Officinale Rhizome/Root Extract Trisodium Ethylenediamine Disuccinate 2-Mercaptonicotinoyl Glycine Butyrospermum Parkii Butter Ammonium Acryloyldimethyltaurate/Vp Copolymer Arachidyl Alcohol Arachidyl Glucoside Behenyl Alcohol Caprylyl Glycol Carbomer Citric Acid Mica Pentylene Glycol Poly C10-30 Alkyl Acrylate Polyglyceryl-4 Caprate Sodium Dilauramidoglutamide Lysine Tin Oxide Xanthan Gum CI 14700 Phenoxyethanol Butyl Methoxydibenzoylmethane 3%, Homosalate 10%, Ethylhexyl Salicylate 5%, Octocrylene 7%, Water, C15-19 Alkane, Niacinamide, Glycerin, Butylene Glycol, Silica, Titanium Dioxide, Hydroxyacetophenone, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Potassium Hydroxide, Sodium Thiosulfate, Taraxacum Officinale Rhizome/Root Extract, Trisodium Ethylenediamine Disuccinate, 2-Mercaptonicotinoyl Glycine, Butyrospermum Parkii Butter, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Arachidyl Alcohol, Arachidyl Glucoside, Behenyl Alcohol, Caprylyl Glycol, Carbomer, Citric Acid, Mica, Pentylene Glycol, Poly C10-30 Alkyl Acrylate, Polyglyceryl-4 Caprate, Sodium Dilauramidoglutamide Lysine, Tin Oxide, Xanthan Gum, CI 14700, Phenoxyethanol Dibutyl Adipate Propanediol Diethylamino Hydroxybenzoyl Hexyl Benzoate Polymethylsilsesquioxane Ethylhexyl Triazone Methylene Bis-Benzotriazolyl Tetramethylbutylphenol Coco-Caprylate/Caprate Caprylyl Methicone Diethylhexyl Butamido Triazone 1,2-Hexanediol Oryza Sativa Extract Oryza Sativa Germ Extract Camellia Sinensis Leaf Extract Lactobacillus/Pumpkin Ferment Extract Bacillus/Soybean Ferment Extract Saccharum Officinarum Extract Macrocystis Pyrifera Extract Cocos Nucifera Fruit Extract Panax Ginseng Root Extract Monascus/Rice Ferment Polyglyceryl-3 Methylglucose Distearate Decyl Glucoside Tromethamine Acrylates/C10-30 Alkyl Acrylate Crosspolymer Sodium Stearoyl Glutamate Polyacrylate Crosspolymer-6 Adenosine T-Butyl Alcohol Tocopherol Lactobacillus/Rice Ferment Aspergillus Ferment Saccharomyces/Rice Ferment Filtrate Ethylhexylglycerin Water, Dibutyl Adipate, Propanediol, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Polymethylsilsesquioxane, Ethylhexyl Triazone, Niacinamide, Methylene Bis-Benzotriazolyl Tetramethylbutylphenol, Coco-Caprylate/Caprate, Caprylyl Methicone, Diethylhexyl Butamido Triazone, Glycerin, 1,2-Hexanediol, Butylene Glycol, Oryza Sativa Extract, Oryza Sativa Germ Extract, Camellia Sinensis Leaf Extract, Lactobacillus/Pumpkin Ferment Extract, Bacillus/Soybean Ferment Extract, Saccharum Officinarum Extract, Macrocystis Pyrifera Extract, Cocos Nucifera Fruit Extract, Panax Ginseng Root Extract, Monascus/Rice Ferment, Behenyl Alcohol, Poly C10-30 Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, De These ingredients are found in both products. Ingredients higher up in an ingredient list are typically present in a larger amount. Behenyl Alcohol is a type of fatty alcohol (these are different from the drying, solvent alcohols). Fatty Alcohols have hydrating properties and are most often used as an emollient or to thicken a product. They are usually derived from natural fats and oils; behenyl alcohol is derived from the fats of vegetable oils. Emollients help keep your skin soft and hydrated by creating a film that traps moisture in. In 2000, Behenyl Alcohol was approved by the US as medicine to reduce the duration of cold sores. 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. Carbomer is a synthetic thickening and gelling agent. It's basically the ingredient that gives a lot of serums, gels, creams, and sunscreens their smooth, non-sticky texture. Although legally permitted at very high levels, carbomers are normally used at concentrations below 1%. It also needs to be neutralized to actually thicken, and because it is a large molecule, it doesn't really penetrate the skin barrier. Allergy-wise, the risk is very low. Clinical studies show carbomers have low potential for skin irritation/sensitization even at concentrations up to 100%. A 2024 UK study patch-tested 1,302 patients and found true allergy to the parent group of carbomer to be rare with no confirmed relevant reactions. Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum. Topically, glycerin does several things at once: Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3. Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin. This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products. Just know very high concentrations (>40%) can feel tacky in low humidity. Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine. Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging. And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin. You might have heard of "niacin flush", or the reddening of skin that causes itchiness.