JoyLab I Love Sun-Day SPF 50 PA+++ Versus Beauty of Joseon Daily Relief Sunscreen SPF 40

JoyLab I Love Sun-Day SPF 50 PA+++ Versus Beauty of Joseon Daily Relief Sunscreen SPF 40 Detailed comparison of JoyLab I Love Sun-Day SPF 50 PA+++ versus Beauty of Joseon Daily Relief Sunscreen SPF 40. This chemical sunscreen covers most of the UV range, lighter on the deep UVA that drives aging. Water Homosalate Octocrylene Ethylhexyl Methoxycinnamate Dipropylene Glycol Ethylhexyl Salicylate Phenylbenzimidazole Sulfonic Acid Butyl Methoxydibenzoylmethane Tromethamine Neopentyl Glycol Diheptanoate Cetearyl Alcohol Glyceryl Stearate PEG-100 Stearate C12-15 Alkyl Benzoate Acrylates/C10-30 Alkyl Acrylate Crosspolymer Phenoxyethanol Chlorphenesin Silica Disodium EDTA Tocopheryl Acetate Xanthan Gum Glycerin BHT Terminalia Ferdinandiana Fruit Extract Water, Homosalate, Octocrylene, Ethylhexyl Methoxycinnamate, Dipropylene Glycol, Ethylhexyl Salicylate, Phenylbenzimidazole Sulfonic Acid, Butyl Methoxydibenzoylmethane, Tromethamine, Neopentyl Glycol Diheptanoate, Cetearyl Alcohol, Glyceryl Stearate, PEG-100 Stearate, C12-15 Alkyl Benzoate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Phenoxyethanol, Chlorphenesin, Silica, Disodium EDTA, Tocopheryl Acetate, Xanthan Gum, Glycerin, BHT, Terminalia Ferdinandiana Fruit Extract Butyloctyl Salicylate Diethylhexyl 2,6-Naphthalate Polymethylsilsesquioxane Caprylyl Methicone 1,2-Hexanediol Vp/Eicosene Copolymer Pentylene Glycol Behenyl Alcohol Poly C10-30 Alkyl Acrylate Polyglyceryl-3 Methylglucose Distearate Inulin Lauryl Carbamate Carbomer Sodium Stearoyl Glutamate Ethylhexylglycerin Polyacrylate Crosspolymer-6 Oryza Sativa Extract T-Butyl Alcohol Tocopherol 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. Acrylates/C10-30 Alkyl Acrylate Crosspolymer is a synthetic polymer. It is used to thicken, emulsify, and improve the texture of products. As an emulsifier, it helps stabilize oil-in-water emulsions to give products an elegant feel when applied. It can also form a thin protective film on skin. One study found that a formula using this polymer helped slow down how quickly other ingredients (like DEET) were absorbed through skin. A 2024 study of over 1,300 patients confirmed that sensitization to this ingredient is rare. It is also non-mutagenic and has a clean track record. Also known as Avobenzone, this ingredient is an oil-soluble used to absorb the full spectrum of UVA rays (peak 357 nm). It's one of the most effective UVA filters available but has a major caveat of photostability: avobenzone is susceptible to photodegradation. This means it can lose efficacy when exposed to sunlight without the help of a stabilizing agent. Studies show antioxidants (like vitamin E or vitamin C) and some UV filters (like octocrylene and Tinosorb S) can meaningfully improve its stability in a formulation. The maximum allowable concentration according to regulation is 3% in the US + Canada, and 5% in the EU, Australia, China, Korea, and ASEAN countries. It has a well-support safety profile: a comprehensive 2025 review found minimal toxicity with no evidence of carcinogenicity. Overall, avobenzone is a safe and regulated ingredient used in sunscreen for over 40 years. 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 alcoh