The Formula rx Sun Relief Ceramide Silk Hydrating Sunscreen SPF 50 Versus Beauty of Joseon Daily Relief Sunscreen SPF 40

The Formula rx Sun Relief Ceramide Silk Hydrating Sunscreen SPF 50 Versus Beauty of Joseon Daily Relief Sunscreen SPF 40 Detailed comparison of The Formula rx Sun Relief Ceramide Silk Hydrating Sunscreen SPF 50 versus Beauty of Joseon Daily Relief Sunscreen SPF 40. This hybrid sunscreen covers the full UV range and blocks ~98% of UVB at SPF 50. This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging. Water Glycerin Dicaprylyl Carbonate Propanediol Butylene Glycol Diethylamino Hydroxybenzoyl Hexyl Benzoate Titanium Dioxide Ethylhexyl Triazone Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine Niacinamide Glyceryl Stearate Cetearyl Alcohol Ceramide NP Ceramide AP Ceramide EOP Phytosphingosine Cholesterol Nonapeptide-1 Linoleic Acid Bisabolol Sodium Hyaluronate Panthenol Allantoin Sodium Lauroyl Lactylate Xanthan Gum Tocopheryl Acetate Carbomer Phenoxyethanol Tocopherol Disodium EDTA Linolenic Acid Ethylhexylglycerin CI 77499 CI 77491 CI 77492 Water, Glycerin, Dicaprylyl Carbonate, Propanediol, Butylene Glycol, Diethylamino Hydroxybenzoyl Hexyl Benzoate, Titanium Dioxide, Ethylhexyl Triazone, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Niacinamide, Glyceryl Stearate, Cetearyl Alcohol, Ceramide NP, Ceramide AP, Ceramide EOP, Phytosphingosine, Cholesterol, Nonapeptide-1, Linoleic Acid, Bisabolol, Sodium Hyaluronate, Panthenol, Allantoin, Sodium Lauroyl Lactylate, Xanthan Gum, Tocopheryl Acetate, Carbomer, Phenoxyethanol, Tocopherol, Disodium EDTA, Linolenic Acid, Ethylhexylglycerin, CI 77499, CI 77491, CI 77492 Homosalate Butyloctyl Salicylate Octocrylene Ethylhexyl Salicylate Dipropylene Glycol Diethylhexyl 2,6-Naphthalate Polymethylsilsesquioxane Butyl Methoxydibenzoylmethane Caprylyl Methicone 1,2-Hexanediol Silica Vp/Eicosene Copolymer Pentylene Glycol Behenyl Alcohol Poly C10-30 Alkyl Acrylate Polyglyceryl-3 Methylglucose Distearate Inulin Lauryl Carbamate Tromethamine Acrylates/C10-30 Alkyl Acrylate Crosspolymer Sodium Stearoyl Glutamate Polyacrylate Crosspolymer-6 Oryza Sativa Extract T-Butyl Alcohol Water, Homosalate, Butyloctyl Salicylate, Octocrylene, Ethylhexyl Salicylate, Dipropylene Glycol, Diethylhexyl 2,6-Naphthalate, Polymethylsilsesquioxane, Butyl Methoxydibenzoylmethane, Glycerin, Caprylyl Methicone, 1,2-Hexanediol, Silica, Vp/Eicosene Copolymer, Pentylene Glycol, Behenyl Alcohol, Poly C10-30 Alkyl Acrylate, Polyglyceryl-3 Methylglucose Distearate, Cetearyl Alcohol, Glyceryl Stearate, Inulin Lauryl Carbamate, Tromethamine, Carbomer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Sodium Stearoyl Glutamate, Ethylhexylglycerin, Polyacrylate Crosspolymer-6, Oryza Sativa Extract, T-Butyl Alcohol, Tocopherol 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. 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. Cetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier. Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient. It plays several roles in a formula: Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products. Multiple assessments have found it to be non-irritating and non-sensitizing to most people. However, there have been some cases of allergic contact dermatitis in patients with chronically compromised skin barriers. Cetearyl alcohol has a comedogenic rating of 2 and irritancy rating of 1. Both of these numbers come from the 1989 study that used rabbit ears; a "2" means mildly comedogenic and a "1" means low irritancy. Here's the catch: rabbit skin is more sensitive than human skin and throws a lot of false positives. A 1996 reappraisal found that ingredients rated 1-2 in the rabbit ear tests are generally safe for humans. Remember comedogenic ratings are unable to assess the entire formula of a product or how it will react on your skin. Just be sure to patch test if you are unsure about certain ingredients. This ingredient is not fungal acne safe. Cetearyl alcohol is a fatty alcohol with chain lengths that fall within the range that Malassezia can metabolize. A 2019 study has also observed Malassezia growth in the presence of this ingredient, confirming it to be not-fungal acne safe. Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that: The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure to patch test if you are unsure. Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations. Glycerin (or glycerol) is a compound naturally found in your skin. It's a